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Import glibc-2.34-21.fc35 from f35

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* Mon Jan 24 2022 Florian Weimer <fweimer@redhat.com> - 2.34-21
- Sync with upstream branch release/2.34/master,
  commit 3438bbca90895d32825a52e31a77dc44d273c1c1:
- Linux: Detect user namespace support in io/tst-getcwd-smallbuff
- realpath: Avoid overwriting preexisting error
- CVE-2021-3999: getcwd: Set errno to ERANGE for size == 1
- tst-realpath-toolong: Fix hurd build
- CVE-2021-3998: realpath: ENAMETOOLONG for result larger than PATH_MAX
- stdlib: Fix formatting of tests list in Makefile
- stdlib: Sort tests in Makefile
- support: Add helpers to create paths longer than PATH_MAX
- powerpc: Fix unrecognized instruction errors with recent binutils
- x86: use default cache size if it cannot be determined [BZ #28784]
- CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug 28768)
- sunrpc: Test case for clnt_create "unix" buffer overflow (bug 22542)
- CVE-2022-23219: Buffer overflow in sunrpc clnt_create for "unix" (bug 22542)
- socket: Add the __sockaddr_un_set function
- Disable debuginfod in printer tests [BZ #28757]
- Update syscall lists for Linux 5.16

Resolves: #2032279
Resolves: #2032276
This commit is contained in:
Florian Weimer 2022-01-24 20:14:21 +01:00
parent bdebdc5e8b
commit db9712052c
17 changed files with 2038 additions and 1 deletions
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337
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commit 705f1e4606aa78f4e861b4e3346725bf5f083a56
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Jan 13 22:18:13 2022 +0000
Update syscall lists for Linux 5.16
Linux 5.16 has one new syscall, futex_waitv. Update
syscall-names.list and regenerate the arch-syscall.h headers with
build-many-glibcs.py update-syscalls.
Tested with build-many-glibcs.py.
(cherry picked from commit 4997a533ae4b51ef66a6b68862b7578a7acb82df)
diff --git a/sysdeps/unix/sysv/linux/aarch64/arch-syscall.h b/sysdeps/unix/sysv/linux/aarch64/arch-syscall.h
index 74a809561a45edc4..9905ebedf298954c 100644
--- a/sysdeps/unix/sysv/linux/aarch64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/aarch64/arch-syscall.h
@@ -62,6 +62,7 @@
#define __NR_fsync 82
#define __NR_ftruncate 46
#define __NR_futex 98
+#define __NR_futex_waitv 449
#define __NR_get_mempolicy 236
#define __NR_get_robust_list 100
#define __NR_getcpu 168
diff --git a/sysdeps/unix/sysv/linux/alpha/arch-syscall.h b/sysdeps/unix/sysv/linux/alpha/arch-syscall.h
index 6fc0a23504c3b53d..ee8085be69958b25 100644
--- a/sysdeps/unix/sysv/linux/alpha/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/alpha/arch-syscall.h
@@ -78,6 +78,7 @@
#define __NR_fsync 95
#define __NR_ftruncate 130
#define __NR_futex 394
+#define __NR_futex_waitv 559
#define __NR_futimesat 454
#define __NR_get_kernel_syms 309
#define __NR_get_mempolicy 430
diff --git a/sysdeps/unix/sysv/linux/arc/arch-syscall.h b/sysdeps/unix/sysv/linux/arc/arch-syscall.h
index 0c66762bf868a992..1b626d97705d545a 100644
--- a/sysdeps/unix/sysv/linux/arc/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/arc/arch-syscall.h
@@ -65,6 +65,7 @@
#define __NR_fsync 82
#define __NR_ftruncate64 46
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_get_mempolicy 236
#define __NR_get_robust_list 100
#define __NR_getcpu 168
diff --git a/sysdeps/unix/sysv/linux/arm/arch-syscall.h b/sysdeps/unix/sysv/linux/arm/arch-syscall.h
index c41a864c6d530eb0..96ef8db9368e7de4 100644
--- a/sysdeps/unix/sysv/linux/arm/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/arm/arch-syscall.h
@@ -90,6 +90,7 @@
#define __NR_ftruncate64 194
#define __NR_futex 240
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_futimesat 326
#define __NR_get_mempolicy 320
#define __NR_get_robust_list 339
diff --git a/sysdeps/unix/sysv/linux/csky/arch-syscall.h b/sysdeps/unix/sysv/linux/csky/arch-syscall.h
index 863ffa3e0cd34d3e..96910154ed6a5c1b 100644
--- a/sysdeps/unix/sysv/linux/csky/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/csky/arch-syscall.h
@@ -70,6 +70,7 @@
#define __NR_ftruncate64 46
#define __NR_futex 98
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_get_mempolicy 236
#define __NR_get_robust_list 100
#define __NR_getcpu 168
diff --git a/sysdeps/unix/sysv/linux/hppa/arch-syscall.h b/sysdeps/unix/sysv/linux/hppa/arch-syscall.h
index 6cf27cd17c1ad0c0..36675fd48e6f50c5 100644
--- a/sysdeps/unix/sysv/linux/hppa/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/hppa/arch-syscall.h
@@ -87,6 +87,7 @@
#define __NR_ftruncate64 200
#define __NR_futex 210
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_futimesat 279
#define __NR_get_mempolicy 261
#define __NR_get_robust_list 290
diff --git a/sysdeps/unix/sysv/linux/i386/arch-syscall.h b/sysdeps/unix/sysv/linux/i386/arch-syscall.h
index 2512508b7daa8ed2..c86ccbda4681066c 100644
--- a/sysdeps/unix/sysv/linux/i386/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/i386/arch-syscall.h
@@ -94,6 +94,7 @@
#define __NR_ftruncate64 194
#define __NR_futex 240
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_futimesat 299
#define __NR_get_kernel_syms 130
#define __NR_get_mempolicy 275
diff --git a/sysdeps/unix/sysv/linux/ia64/arch-syscall.h b/sysdeps/unix/sysv/linux/ia64/arch-syscall.h
index 4a0c737369217367..d898bce404955ef0 100644
--- a/sysdeps/unix/sysv/linux/ia64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/ia64/arch-syscall.h
@@ -74,6 +74,7 @@
#define __NR_fsync 1051
#define __NR_ftruncate 1098
#define __NR_futex 1230
+#define __NR_futex_waitv 1473
#define __NR_futimesat 1285
#define __NR_get_mempolicy 1260
#define __NR_get_robust_list 1299
diff --git a/sysdeps/unix/sysv/linux/m68k/arch-syscall.h b/sysdeps/unix/sysv/linux/m68k/arch-syscall.h
index e310eb5075fb22d8..fe721b809076abeb 100644
--- a/sysdeps/unix/sysv/linux/m68k/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/m68k/arch-syscall.h
@@ -93,6 +93,7 @@
#define __NR_ftruncate64 194
#define __NR_futex 235
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_futimesat 292
#define __NR_get_kernel_syms 130
#define __NR_get_mempolicy 269
diff --git a/sysdeps/unix/sysv/linux/microblaze/arch-syscall.h b/sysdeps/unix/sysv/linux/microblaze/arch-syscall.h
index b4ecad010c2a6abf..6e10c3661db96a1e 100644
--- a/sysdeps/unix/sysv/linux/microblaze/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/microblaze/arch-syscall.h
@@ -94,6 +94,7 @@
#define __NR_ftruncate64 194
#define __NR_futex 240
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_futimesat 299
#define __NR_get_kernel_syms 130
#define __NR_get_mempolicy 275
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/arch-syscall.h b/sysdeps/unix/sysv/linux/mips/mips32/arch-syscall.h
index 7e3d138ba969c57b..26a6d594a2222f15 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/mips/mips32/arch-syscall.h
@@ -93,6 +93,7 @@
#define __NR_ftruncate64 4212
#define __NR_futex 4238
#define __NR_futex_time64 4422
+#define __NR_futex_waitv 4449
#define __NR_futimesat 4292
#define __NR_get_kernel_syms 4130
#define __NR_get_mempolicy 4269
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/arch-syscall.h b/sysdeps/unix/sysv/linux/mips/mips64/n32/arch-syscall.h
index 7e9e232e5256bc89..83e0d49c5e3ca1bc 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/arch-syscall.h
@@ -86,6 +86,7 @@
#define __NR_ftruncate 6075
#define __NR_futex 6194
#define __NR_futex_time64 6422
+#define __NR_futex_waitv 6449
#define __NR_futimesat 6255
#define __NR_get_kernel_syms 6170
#define __NR_get_mempolicy 6232
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/arch-syscall.h b/sysdeps/unix/sysv/linux/mips/mips64/n64/arch-syscall.h
index f9e7ef72b0aa1749..d6747c542f63202b 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/arch-syscall.h
@@ -78,6 +78,7 @@
#define __NR_fsync 5072
#define __NR_ftruncate 5075
#define __NR_futex 5194
+#define __NR_futex_waitv 5449
#define __NR_futimesat 5251
#define __NR_get_kernel_syms 5170
#define __NR_get_mempolicy 5228
diff --git a/sysdeps/unix/sysv/linux/nios2/arch-syscall.h b/sysdeps/unix/sysv/linux/nios2/arch-syscall.h
index afd73fc1daca1fb4..4ee209bc4475ea7d 100644
--- a/sysdeps/unix/sysv/linux/nios2/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/nios2/arch-syscall.h
@@ -69,6 +69,7 @@
#define __NR_ftruncate64 46
#define __NR_futex 98
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_get_mempolicy 236
#define __NR_get_robust_list 100
#define __NR_getcpu 168
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/arch-syscall.h b/sysdeps/unix/sysv/linux/powerpc/powerpc32/arch-syscall.h
index 0ac2992028eda27e..497299fbc47a708c 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/arch-syscall.h
@@ -92,6 +92,7 @@
#define __NR_ftruncate64 194
#define __NR_futex 221
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_futimesat 290
#define __NR_get_kernel_syms 130
#define __NR_get_mempolicy 260
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/arch-syscall.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/arch-syscall.h
index c890bc644e14fe06..e840279f171b10b9 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/arch-syscall.h
@@ -81,6 +81,7 @@
#define __NR_ftime 35
#define __NR_ftruncate 93
#define __NR_futex 221
+#define __NR_futex_waitv 449
#define __NR_futimesat 290
#define __NR_get_kernel_syms 130
#define __NR_get_mempolicy 260
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h b/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h
index cd336d755a42598a..73ef74c005e5a2bb 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h
@@ -60,6 +60,7 @@
#define __NR_fsync 82
#define __NR_ftruncate64 46
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_get_mempolicy 236
#define __NR_get_robust_list 100
#define __NR_getcpu 168
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h b/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h
index 8edd21620bb4ef64..919a79ee91177459 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h
@@ -62,6 +62,7 @@
#define __NR_fsync 82
#define __NR_ftruncate 46
#define __NR_futex 98
+#define __NR_futex_waitv 449
#define __NR_get_mempolicy 236
#define __NR_get_robust_list 100
#define __NR_getcpu 168
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/arch-syscall.h b/sysdeps/unix/sysv/linux/s390/s390-32/arch-syscall.h
index 1a4873f505765617..005c0ada7aab85a1 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/arch-syscall.h
@@ -91,6 +91,7 @@
#define __NR_ftruncate64 194
#define __NR_futex 238
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_futimesat 292
#define __NR_get_kernel_syms 130
#define __NR_get_mempolicy 269
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/arch-syscall.h b/sysdeps/unix/sysv/linux/s390/s390-64/arch-syscall.h
index 2af4607c1d36d173..9131fddcc16116e4 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/arch-syscall.h
@@ -76,6 +76,7 @@
#define __NR_fsync 118
#define __NR_ftruncate 93
#define __NR_futex 238
+#define __NR_futex_waitv 449
#define __NR_futimesat 292
#define __NR_get_kernel_syms 130
#define __NR_get_mempolicy 269
diff --git a/sysdeps/unix/sysv/linux/sh/arch-syscall.h b/sysdeps/unix/sysv/linux/sh/arch-syscall.h
index 7b422ce268ba14d0..d8fb041568ecb4da 100644
--- a/sysdeps/unix/sysv/linux/sh/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/sh/arch-syscall.h
@@ -90,6 +90,7 @@
#define __NR_ftruncate64 194
#define __NR_futex 240
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_futimesat 299
#define __NR_get_mempolicy 275
#define __NR_get_robust_list 312
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/arch-syscall.h b/sysdeps/unix/sysv/linux/sparc/sparc32/arch-syscall.h
index 77c3cc64f95ea7f3..2bc014fe6a1a1f4a 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/arch-syscall.h
@@ -92,6 +92,7 @@
#define __NR_ftruncate64 84
#define __NR_futex 142
#define __NR_futex_time64 422
+#define __NR_futex_waitv 449
#define __NR_futimesat 288
#define __NR_get_kernel_syms 223
#define __NR_get_mempolicy 304
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/arch-syscall.h b/sysdeps/unix/sysv/linux/sparc/sparc64/arch-syscall.h
index 7ad50bc4ad6cef04..76dbbe595ffe868f 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/arch-syscall.h
@@ -82,6 +82,7 @@
#define __NR_fsync 95
#define __NR_ftruncate 130
#define __NR_futex 142
+#define __NR_futex_waitv 449
#define __NR_futimesat 288
#define __NR_get_kernel_syms 223
#define __NR_get_mempolicy 304
diff --git a/sysdeps/unix/sysv/linux/syscall-names.list b/sysdeps/unix/sysv/linux/syscall-names.list
index 1a74d090b72f4d61..0bc2af37dfa1eeb5 100644
--- a/sysdeps/unix/sysv/linux/syscall-names.list
+++ b/sysdeps/unix/sysv/linux/syscall-names.list
@@ -21,8 +21,8 @@
# This file can list all potential system calls. The names are only
# used if the installed kernel headers also provide them.
-# The list of system calls is current as of Linux 5.15.
-kernel 5.15
+# The list of system calls is current as of Linux 5.16.
+kernel 5.16
FAST_atomic_update
FAST_cmpxchg
@@ -146,6 +146,7 @@ ftruncate
ftruncate64
futex
futex_time64
+futex_waitv
futimesat
get_kernel_syms
get_mempolicy
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/arch-syscall.h b/sysdeps/unix/sysv/linux/x86_64/64/arch-syscall.h
index 3ce2a1fcfc1c15f2..28558279b48a1ef4 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/x86_64/64/arch-syscall.h
@@ -78,6 +78,7 @@
#define __NR_fsync 74
#define __NR_ftruncate 77
#define __NR_futex 202
+#define __NR_futex_waitv 449
#define __NR_futimesat 261
#define __NR_get_kernel_syms 177
#define __NR_get_mempolicy 239
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h b/sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h
index 9e87e89baccc397c..c1ab8ec45e8b8fd3 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h
@@ -74,6 +74,7 @@
#define __NR_fsync 1073741898
#define __NR_ftruncate 1073741901
#define __NR_futex 1073742026
+#define __NR_futex_waitv 1073742273
#define __NR_futimesat 1073742085
#define __NR_get_mempolicy 1073742063
#define __NR_get_robust_list 1073742355

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@ -0,0 +1,53 @@
commit 03e6e02e6a216cfb913f49b3be80d5088603864f
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Sun Jan 9 09:06:15 2022 -0800
Disable debuginfod in printer tests [BZ #28757]
With gdb-11.1-6.fc35.x86_64, I got
FAIL: nptl/test-cond-printers
FAIL: nptl/test-condattr-printers
FAIL: nptl/test-mutex-printers
FAIL: nptl/test-mutexattr-printers
FAIL: nptl/test-rwlock-printers
FAIL: nptl/test-rwlockattr-printers
$ cat nptl/test-condattr-printers.out
Error: Response does not match the expected pattern.
Command: start
Expected pattern: main
Response: Temporary breakpoint 1 at 0x11d5: file test-condattr-printers.c, line 43.
Starting program: /export/build/gnu/tools-build/glibc-cet-gitlab/build-x86_64-linux/nptl/test-condattr-printers
This GDB supports auto-downloading debuginfo from the following URLs:
https://debuginfod.fedoraproject.org/
Enable debuginfod for this session? (y or [n])
Disable debuginfod to avoid GDB messages. This fixes BZ #28757.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
(cherry picked from commit 7de501f9418bf099e7104b63b0e4423257981b14)
diff --git a/scripts/test_printers_common.py b/scripts/test_printers_common.py
index 34a3df6e6bd8b363..53b6d30d40ce2622 100644
--- a/scripts/test_printers_common.py
+++ b/scripts/test_printers_common.py
@@ -161,6 +161,17 @@ def init_test(test_bin, printer_files, printer_names):
printer files.
"""
+ # Disable debuginfod to avoid GDB messages like:
+ #
+ # This GDB supports auto-downloading debuginfo from the following URLs:
+ # https://debuginfod.fedoraproject.org/
+ # Enable debuginfod for this session? (y or [n])
+ #
+ try:
+ test('set debuginfod enabled off')
+ except Exception:
+ pass
+
# Load all the pretty printer files. We're assuming these are safe.
for printer_file in printer_files:
test('source {0}'.format(printer_file))

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commit 5575daae5099e779bb860b566b4d608418a5b832
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Jan 17 10:21:34 2022 +0100
socket: Add the __sockaddr_un_set function
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit e368b12f6c16b6888dda99ba641e999b9c9643c8)
diff --git a/include/sys/un.h b/include/sys/un.h
index bdbee999806930f4..152afd9fc7426d8b 100644
--- a/include/sys/un.h
+++ b/include/sys/un.h
@@ -1 +1,13 @@
#include <socket/sys/un.h>
+
+#ifndef _ISOMAC
+
+/* Set ADDR->sun_family to AF_UNIX and ADDR->sun_path to PATHNAME.
+ Return 0 on success or -1 on failure (due to overlong PATHNAME).
+ The caller should always use sizeof (struct sockaddr_un) as the
+ socket address length, disregaring the length of PATHNAME.
+ Only concrete (non-abstract) pathnames are supported. */
+int __sockaddr_un_set (struct sockaddr_un *addr, const char *pathname)
+ attribute_hidden;
+
+#endif /* _ISOMAC */
diff --git a/socket/Makefile b/socket/Makefile
index 375957601024c12e..c2de11d73ca1e324 100644
--- a/socket/Makefile
+++ b/socket/Makefile
@@ -29,13 +29,17 @@ headers := sys/socket.h sys/un.h bits/sockaddr.h bits/socket.h \
routines := accept bind connect getpeername getsockname getsockopt \
listen recv recvfrom recvmsg send sendmsg sendto \
setsockopt shutdown socket socketpair isfdtype opensock \
- sockatmark accept4 recvmmsg sendmmsg
+ sockatmark accept4 recvmmsg sendmmsg sockaddr_un_set
tests := \
tst-accept4 \
tst-sockopt \
# tests
+tests-internal := \
+ tst-sockaddr_un_set \
+ # tests-internal
+
tests-time64 := \
tst-sockopt-time64 \
# tests
diff --git a/socket/sockaddr_un_set.c b/socket/sockaddr_un_set.c
new file mode 100644
index 0000000000000000..0bd40dc34e3d7efc
--- /dev/null
+++ b/socket/sockaddr_un_set.c
@@ -0,0 +1,41 @@
+/* Set the sun_path member of struct sockaddr_un.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+int
+__sockaddr_un_set (struct sockaddr_un *addr, const char *pathname)
+{
+ size_t name_length = strlen (pathname);
+
+ /* The kernel supports names of exactly sizeof (addr->sun_path)
+ bytes, without a null terminator, but userspace does not; see the
+ SUN_LEN macro. */
+ if (name_length >= sizeof (addr->sun_path))
+ {
+ __set_errno (EINVAL); /* Error code used by the kernel. */
+ return -1;
+ }
+
+ addr->sun_family = AF_UNIX;
+ memcpy (addr->sun_path, pathname, name_length + 1);
+ return 0;
+}
diff --git a/socket/tst-sockaddr_un_set.c b/socket/tst-sockaddr_un_set.c
new file mode 100644
index 0000000000000000..29c2a81afda81b5e
--- /dev/null
+++ b/socket/tst-sockaddr_un_set.c
@@ -0,0 +1,62 @@
+/* Test the __sockaddr_un_set function.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* Re-compile the function because the version in libc is not
+ exported. */
+#include "sockaddr_un_set.c"
+
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ struct sockaddr_un sun;
+
+ memset (&sun, 0xcc, sizeof (sun));
+ __sockaddr_un_set (&sun, "");
+ TEST_COMPARE (sun.sun_family, AF_UNIX);
+ TEST_COMPARE (__sockaddr_un_set (&sun, ""), 0);
+
+ memset (&sun, 0xcc, sizeof (sun));
+ TEST_COMPARE (__sockaddr_un_set (&sun, "/example"), 0);
+ TEST_COMPARE_STRING (sun.sun_path, "/example");
+
+ {
+ char pathname[108]; /* Length of sun_path (ABI constant). */
+ memset (pathname, 'x', sizeof (pathname));
+ pathname[sizeof (pathname) - 1] = '\0';
+ memset (&sun, 0xcc, sizeof (sun));
+ TEST_COMPARE (__sockaddr_un_set (&sun, pathname), 0);
+ TEST_COMPARE (sun.sun_family, AF_UNIX);
+ TEST_COMPARE_STRING (sun.sun_path, pathname);
+ }
+
+ {
+ char pathname[109];
+ memset (pathname, 'x', sizeof (pathname));
+ pathname[sizeof (pathname) - 1] = '\0';
+ memset (&sun, 0xcc, sizeof (sun));
+ errno = 0;
+ TEST_COMPARE (__sockaddr_un_set (&sun, pathname), -1);
+ TEST_COMPARE (errno, EINVAL);
+ }
+
+ return 0;
+}
+
+#include <support/test-driver.c>

33
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@ -0,0 +1,33 @@
commit 7b5d433fd097b8ed74e458eca33597290e07b974
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Jan 17 10:21:34 2022 +0100
CVE-2022-23219: Buffer overflow in sunrpc clnt_create for "unix" (bug 22542)
Processing an overlong pathname in the sunrpc clnt_create function
results in a stack-based buffer overflow.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 226b46770c82899b555986583294b049c6ec9b40)
diff --git a/sunrpc/clnt_gen.c b/sunrpc/clnt_gen.c
index 13ced8994e49d4ee..b44357cd88e60599 100644
--- a/sunrpc/clnt_gen.c
+++ b/sunrpc/clnt_gen.c
@@ -57,9 +57,13 @@ clnt_create (const char *hostname, u_long prog, u_long vers,
if (strcmp (proto, "unix") == 0)
{
- memset ((char *)&sun, 0, sizeof (sun));
- sun.sun_family = AF_UNIX;
- strcpy (sun.sun_path, hostname);
+ if (__sockaddr_un_set (&sun, hostname) < 0)
+ {
+ struct rpc_createerr *ce = &get_rpc_createerr ();
+ ce->cf_stat = RPC_SYSTEMERROR;
+ ce->cf_error.re_errno = errno;
+ return NULL;
+ }
sock = RPC_ANYSOCK;
client = clntunix_create (&sun, prog, vers, &sock, 0, 0);
if (client == NULL)

82
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@ -0,0 +1,82 @@
commit 1081f1d3dd7c84ba3416b5198d47a4df2b70185d
Author: Martin Sebor <msebor@redhat.com>
Date: Mon Jan 17 10:21:34 2022 +0100
sunrpc: Test case for clnt_create "unix" buffer overflow (bug 22542)
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit ef972a4c50014a16132b5c75571cfb6b30bef136)
diff --git a/sunrpc/Makefile b/sunrpc/Makefile
index 7e5bbfd951b1e835..a4281b18d04c78e9 100644
--- a/sunrpc/Makefile
+++ b/sunrpc/Makefile
@@ -65,7 +65,8 @@ shared-only-routines = $(routines)
endif
tests = tst-xdrmem tst-xdrmem2 test-rpcent tst-udp-error tst-udp-timeout \
- tst-udp-nonblocking
+ tst-udp-nonblocking tst-bug22542
+
xtests := tst-getmyaddr
ifeq ($(have-thread-library),yes)
@@ -110,6 +111,8 @@ $(objpfx)tst-udp-nonblocking: $(common-objpfx)linkobj/libc.so
$(objpfx)tst-udp-garbage: \
$(common-objpfx)linkobj/libc.so $(shared-thread-library)
+$(objpfx)tst-bug22542: $(common-objpfx)linkobj/libc.so
+
else # !have-GLIBC_2.31
routines = $(routines-for-nss)
diff --git a/sunrpc/tst-bug22542.c b/sunrpc/tst-bug22542.c
new file mode 100644
index 0000000000000000..d6cd79787bdef21d
--- /dev/null
+++ b/sunrpc/tst-bug22542.c
@@ -0,0 +1,44 @@
+/* Test to verify that overlong hostname is rejected by clnt_create
+ and doesn't cause a buffer overflow (bug 22542).
+
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <rpc/clnt.h>
+#include <string.h>
+#include <support/check.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+static int
+do_test (void)
+{
+ /* Create an arbitrary hostname that's longer than fits in sun_path. */
+ char name [sizeof ((struct sockaddr_un*)0)->sun_path * 2];
+ memset (name, 'x', sizeof name - 1);
+ name [sizeof name - 1] = '\0';
+
+ errno = 0;
+ CLIENT *clnt = clnt_create (name, 0, 0, "unix");
+
+ TEST_VERIFY (clnt == NULL);
+ TEST_COMPARE (errno, EINVAL);
+ return 0;
+}
+
+#include <support/test-driver.c>

102
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@ -0,0 +1,102 @@
commit 6890b8a3ae40ab9d4c96024ab95b04816fcc8a4a
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Jan 17 11:49:25 2022 +0100
CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug 28768)
The sunrpc function svcunix_create suffers from a stack-based buffer
overflow with overlong pathname arguments.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit f545ad4928fa1f27a3075265182b38a4f939a5f7)
diff --git a/sunrpc/Makefile b/sunrpc/Makefile
index a4281b18d04c78e9..6408ab5c073538e9 100644
--- a/sunrpc/Makefile
+++ b/sunrpc/Makefile
@@ -65,7 +65,7 @@ shared-only-routines = $(routines)
endif
tests = tst-xdrmem tst-xdrmem2 test-rpcent tst-udp-error tst-udp-timeout \
- tst-udp-nonblocking tst-bug22542
+ tst-udp-nonblocking tst-bug22542 tst-bug28768
xtests := tst-getmyaddr
diff --git a/sunrpc/svc_unix.c b/sunrpc/svc_unix.c
index 679fbe9cb69587bd..46f8d16fe94a3d4f 100644
--- a/sunrpc/svc_unix.c
+++ b/sunrpc/svc_unix.c
@@ -154,7 +154,10 @@ svcunix_create (int sock, u_int sendsize, u_int recvsize, char *path)
SVCXPRT *xprt;
struct unix_rendezvous *r;
struct sockaddr_un addr;
- socklen_t len = sizeof (struct sockaddr_in);
+ socklen_t len = sizeof (addr);
+
+ if (__sockaddr_un_set (&addr, path) < 0)
+ return NULL;
if (sock == RPC_ANYSOCK)
{
@@ -165,12 +168,6 @@ svcunix_create (int sock, u_int sendsize, u_int recvsize, char *path)
}
madesock = TRUE;
}
- memset (&addr, '\0', sizeof (addr));
- addr.sun_family = AF_UNIX;
- len = strlen (path) + 1;
- memcpy (addr.sun_path, path, len);
- len += sizeof (addr.sun_family);
-
__bind (sock, (struct sockaddr *) &addr, len);
if (__getsockname (sock, (struct sockaddr *) &addr, &len) != 0
diff --git a/sunrpc/tst-bug28768.c b/sunrpc/tst-bug28768.c
new file mode 100644
index 0000000000000000..35a4b7b0b3d34350
--- /dev/null
+++ b/sunrpc/tst-bug28768.c
@@ -0,0 +1,42 @@
+/* Test to verify that long path is rejected by svcunix_create (bug 28768).
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <rpc/svc.h>
+#include <shlib-compat.h>
+#include <string.h>
+#include <support/check.h>
+
+/* svcunix_create does not have a default version in linkobj/libc.so. */
+compat_symbol_reference (libc, svcunix_create, svcunix_create, GLIBC_2_1);
+
+static int
+do_test (void)
+{
+ char pathname[109];
+ memset (pathname, 'x', sizeof (pathname));
+ pathname[sizeof (pathname) - 1] = '\0';
+
+ errno = 0;
+ TEST_VERIFY (svcunix_create (RPC_ANYSOCK, 4096, 4096, pathname) == NULL);
+ TEST_COMPARE (errno, EINVAL);
+
+ return 0;
+}
+
+#include <support/test-driver.c>

56
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@ -0,0 +1,56 @@
commit 1d401d1fccb85046402089268b94d86d822070e6
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Mon Jan 17 19:41:40 2022 +0100
x86: use default cache size if it cannot be determined [BZ #28784]
In some cases (e.g QEMU, non-Intel/AMD CPU) the cache information can
not be retrieved and the corresponding values are set to 0.
Commit 2d651eb9265d ("x86: Move x86 processor cache info to
cpu_features") changed the behaviour in such case by defining the
__x86_shared_cache_size and __x86_data_cache_size variables to 0 instead
of using the default values. This cause an issue with the i686 SSE2
optimized bzero/routine which assumes that the cache size is at least
128 bytes, and otherwise tries to zero/set the whole address space minus
128 bytes.
Fix that by restoring the original code to only update
__x86_shared_cache_size and __x86_data_cache_size variables if the
corresponding cache sizes are not zero.
Fixes bug 28784
Fixes commit 2d651eb9265d
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit c242fcce06e3102ca663b2f992611d0bda4f2668)
diff --git a/sysdeps/x86/cacheinfo.h b/sysdeps/x86/cacheinfo.h
index 41d2c81369840ada..63f36877e3f35d99 100644
--- a/sysdeps/x86/cacheinfo.h
+++ b/sysdeps/x86/cacheinfo.h
@@ -61,14 +61,20 @@ init_cacheinfo (void)
long int data = cpu_features->data_cache_size;
/* Round data cache size to multiple of 256 bytes. */
data = data & ~255L;
- __x86_data_cache_size_half = data / 2;
- __x86_data_cache_size = data;
+ if (data > 0)
+ {
+ __x86_data_cache_size_half = data / 2;
+ __x86_data_cache_size = data;
+ }
long int shared = cpu_features->shared_cache_size;
/* Round shared cache size to multiple of 256 bytes. */
shared = shared & ~255L;
- __x86_shared_cache_size_half = shared / 2;
- __x86_shared_cache_size = shared;
+ if (shared > 0)
+ {
+ __x86_shared_cache_size_half = shared / 2;
+ __x86_shared_cache_size = shared;
+ }
__x86_shared_non_temporal_threshold
= cpu_features->non_temporal_threshold;

64
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@ -0,0 +1,64 @@
commit 82b1acd9de9796298a230d7484f26fe9a7756d18
Author: Paul A. Clarke <pc@us.ibm.com>
Date: Sat Sep 25 09:57:15 2021 -0500
powerpc: Fix unrecognized instruction errors with recent binutils
Recent versions of binutils (with commit
b25f942e18d6ecd7ec3e2d2e9930eb4f996c258a) stopped preserving "sticky"
options across a base `.machine` directive, nullifying the use of
passing "-many" through GCC to the assembler. As a result, some
instructions which were recognized even under older, more stringent
`.machine` directives become unrecognized instructions in that
context.
In `sysdeps/powerpc/tst-set_ppr.c`, the use of the `mfppr32` extended
mnemonic became unrecognized, as the default compilation with GCC for
32bit powerpc adds a `.machine ppc` in the resulting assembly, so the
command line option `-Wa,-many` is essentially ignored, and the ISA 2.06
instructions and mnemonics, like `mfppr32`, are unrecognized.
The compilation of `sysdeps/powerpc/tst-set_ppr.c` fails with:
Error: unrecognized opcode: `mfppr32'
Add appropriate `.machine` directives in the assembly to bracket the
`mfppr32` instruction.
Part of a 2019 fix (commit 9250e6610fdb0f3a6f238d2813e319a41fb7a810) to
the above test's Makefile to add `-many` to the compilation when GCC
itself stopped passing `-many` to the assember no longer has any effect,
so remove that.
Reported-by: Joseph Myers <joseph@codesourcery.com>
(cherry picked from commit ee874f44fd55988808a4a162ef21bfa2cc8dc6f7)
diff --git a/sysdeps/powerpc/Makefile b/sysdeps/powerpc/Makefile
index 09860ffc0155d765..5e6cb07ce66decfa 100644
--- a/sysdeps/powerpc/Makefile
+++ b/sysdeps/powerpc/Makefile
@@ -61,11 +61,6 @@ ifeq ($(subdir),misc)
sysdep_headers += sys/platform/ppc.h
tests += test-gettimebase
tests += tst-set_ppr
-
-# This test is expected to run and exit with EXIT_UNSUPPORTED on
-# processors that do not implement the Power ISA 2.06 or greater.
-# But the test makes use of instructions from Power ISA 2.06 and 2.07.
-CFLAGS-tst-set_ppr.c += -Wa,-many
endif
ifeq ($(subdir),wcsmbs)
diff --git a/sysdeps/powerpc/tst-set_ppr.c b/sysdeps/powerpc/tst-set_ppr.c
index 7684f5d6ea905c60..e80da15320635585 100644
--- a/sysdeps/powerpc/tst-set_ppr.c
+++ b/sysdeps/powerpc/tst-set_ppr.c
@@ -44,7 +44,8 @@ get_thread_priority (void)
{
/* Read the PPR. */
ppr_t ppr;
- asm volatile (MFPPR" %0" : "=r"(ppr));
+ asm volatile (".machine push; .machine power7; "MFPPR" %0; .machine pop"
+ : "=r"(ppr));
/* Return the thread priority value. */
return EXTRACT_THREAD_PRIORITY (ppr);
}

276
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@ -0,0 +1,276 @@
commit 062ff490c1467059f6cd64bb9c3d85f6cc6cf97a
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Tue Jan 18 13:29:36 2022 +0530
support: Add helpers to create paths longer than PATH_MAX
Add new helpers support_create_and_chdir_toolong_temp_directory and
support_chdir_toolong_temp_directory to create and descend into
directory trees longer than PATH_MAX.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit fb7bff12e81c677a6622f724edd4d4987dd9d971)
diff --git a/support/temp_file.c b/support/temp_file.c
index c6df641876285bb2..e41128c2d43fe903 100644
--- a/support/temp_file.c
+++ b/support/temp_file.c
@@ -1,5 +1,6 @@
/* Temporary file handling for tests.
- Copyright (C) 1998-2021 Free Software Foundation, Inc.
+ Copyright (C) 1998-2022 Free Software Foundation, Inc.
+ Copyright The GNU Tools Authors.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -20,15 +21,17 @@
some 32-bit platforms. */
#define _FILE_OFFSET_BITS 64
+#include <support/check.h>
#include <support/temp_file.h>
#include <support/temp_file-internal.h>
#include <support/support.h>
+#include <errno.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
+#include <xunistd.h>
/* List of temporary files. */
static struct temp_name_list
@@ -36,14 +39,20 @@ static struct temp_name_list
struct temp_name_list *next;
char *name;
pid_t owner;
+ bool toolong;
} *temp_name_list;
/* Location of the temporary files. Set by the test skeleton via
support_set_test_dir. The string is not be freed. */
static const char *test_dir = _PATH_TMP;
-void
-add_temp_file (const char *name)
+/* Name of subdirectories in a too long temporary directory tree. */
+static char toolong_subdir[NAME_MAX + 1];
+static bool toolong_initialized;
+static size_t toolong_path_max;
+
+static void
+add_temp_file_internal (const char *name, bool toolong)
{
struct temp_name_list *newp
= (struct temp_name_list *) xcalloc (sizeof (*newp), 1);
@@ -53,12 +62,19 @@ add_temp_file (const char *name)
newp->name = newname;
newp->next = temp_name_list;
newp->owner = getpid ();
+ newp->toolong = toolong;
temp_name_list = newp;
}
else
free (newp);
}
+void
+add_temp_file (const char *name)
+{
+ add_temp_file_internal (name, false);
+}
+
int
create_temp_file_in_dir (const char *base, const char *dir, char **filename)
{
@@ -90,8 +106,8 @@ create_temp_file (const char *base, char **filename)
return create_temp_file_in_dir (base, test_dir, filename);
}
-char *
-support_create_temp_directory (const char *base)
+static char *
+create_temp_directory_internal (const char *base, bool toolong)
{
char *path = xasprintf ("%s/%sXXXXXX", test_dir, base);
if (mkdtemp (path) == NULL)
@@ -99,16 +115,132 @@ support_create_temp_directory (const char *base)
printf ("error: mkdtemp (\"%s\"): %m", path);
exit (1);
}
- add_temp_file (path);
+ add_temp_file_internal (path, toolong);
return path;
}
-/* Helper functions called by the test skeleton follow. */
+char *
+support_create_temp_directory (const char *base)
+{
+ return create_temp_directory_internal (base, false);
+}
+
+static void
+ensure_toolong_initialized (void)
+{
+ if (!toolong_initialized)
+ FAIL_EXIT1 ("uninitialized toolong directory tree\n");
+}
+
+static void
+initialize_toolong (const char *base)
+{
+ long name_max = pathconf (base, _PC_NAME_MAX);
+ name_max = (name_max < 0 ? 64
+ : (name_max < sizeof (toolong_subdir) ? name_max
+ : sizeof (toolong_subdir) - 1));
+
+ long path_max = pathconf (base, _PC_PATH_MAX);
+ path_max = (path_max < 0 ? 1024
+ : path_max <= PTRDIFF_MAX ? path_max : PTRDIFF_MAX);
+
+ /* Sanity check to ensure that the test does not create temporary directories
+ in different filesystems because this API doesn't support it. */
+ if (toolong_initialized)
+ {
+ if (name_max != strlen (toolong_subdir))
+ FAIL_UNSUPPORTED ("name_max: Temporary directories in different"
+ " filesystems not supported yet\n");
+ if (path_max != toolong_path_max)
+ FAIL_UNSUPPORTED ("path_max: Temporary directories in different"
+ " filesystems not supported yet\n");
+ return;
+ }
+
+ toolong_path_max = path_max;
+
+ size_t len = name_max;
+ memset (toolong_subdir, 'X', len);
+ toolong_initialized = true;
+}
+
+char *
+support_create_and_chdir_toolong_temp_directory (const char *basename)
+{
+ char *base = create_temp_directory_internal (basename, true);
+ xchdir (base);
+
+ initialize_toolong (base);
+
+ size_t sz = strlen (toolong_subdir);
+
+ /* Create directories and descend into them so that the final path is larger
+ than PATH_MAX. */
+ for (size_t i = 0; i <= toolong_path_max / sz; i++)
+ {
+ int ret = mkdir (toolong_subdir, S_IRWXU);
+ if (ret != 0 && errno == ENAMETOOLONG)
+ FAIL_UNSUPPORTED ("Filesystem does not support creating too long "
+ "directory trees\n");
+ else if (ret != 0)
+ FAIL_EXIT1 ("Failed to create directory tree: %m\n");
+ xchdir (toolong_subdir);
+ }
+ return base;
+}
void
-support_set_test_dir (const char *path)
+support_chdir_toolong_temp_directory (const char *base)
{
- test_dir = path;
+ ensure_toolong_initialized ();
+
+ xchdir (base);
+
+ size_t sz = strlen (toolong_subdir);
+ for (size_t i = 0; i <= toolong_path_max / sz; i++)
+ xchdir (toolong_subdir);
+}
+
+/* Helper functions called by the test skeleton follow. */
+
+static void
+remove_toolong_subdirs (const char *base)
+{
+ ensure_toolong_initialized ();
+
+ if (chdir (base) != 0)
+ {
+ printf ("warning: toolong cleanup base failed: chdir (\"%s\"): %m\n",
+ base);
+ return;
+ }
+
+ /* Descend. */
+ int levels = 0;
+ size_t sz = strlen (toolong_subdir);
+ for (levels = 0; levels <= toolong_path_max / sz; levels++)
+ if (chdir (toolong_subdir) != 0)
+ {
+ printf ("warning: toolong cleanup failed: chdir (\"%s\"): %m\n",
+ toolong_subdir);
+ break;
+ }
+
+ /* Ascend and remove. */
+ while (--levels >= 0)
+ {
+ if (chdir ("..") != 0)
+ {
+ printf ("warning: toolong cleanup failed: chdir (\"..\"): %m\n");
+ return;
+ }
+ if (remove (toolong_subdir) != 0)
+ {
+ printf ("warning: could not remove subdirectory: %s: %m\n",
+ toolong_subdir);
+ return;
+ }
+ }
}
void
@@ -123,6 +255,9 @@ support_delete_temp_files (void)
around, to prevent PID reuse.) */
if (temp_name_list->owner == pid)
{
+ if (temp_name_list->toolong)
+ remove_toolong_subdirs (temp_name_list->name);
+
if (remove (temp_name_list->name) != 0)
printf ("warning: could not remove temporary file: %s: %m\n",
temp_name_list->name);
@@ -147,3 +282,9 @@ support_print_temp_files (FILE *f)
fprintf (f, ")\n");
}
}
+
+void
+support_set_test_dir (const char *path)
+{
+ test_dir = path;
+}
diff --git a/support/temp_file.h b/support/temp_file.h
index f3a7fb6f9ca44d19..a22964c6fa11abd2 100644
--- a/support/temp_file.h
+++ b/support/temp_file.h
@@ -44,6 +44,15 @@ int create_temp_file_in_dir (const char *base, const char *dir,
returns. The caller should free this string. */
char *support_create_temp_directory (const char *base);
+/* Create a temporary directory tree that is longer than PATH_MAX and schedule
+ it for deletion. BASENAME is used as a prefix for the unique directory
+ name, which the function returns. The caller should free this string. */
+char *support_create_and_chdir_toolong_temp_directory (const char *basename);
+
+/* Change into the innermost directory of the directory tree BASE, which was
+ created using support_create_and_chdir_toolong_temp_directory. */
+void support_chdir_toolong_temp_directory (const char *base);
+
__END_DECLS
#endif /* SUPPORT_TEMP_FILE_H */

121
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@ -0,0 +1,121 @@
commit 269eb9d930546ce57e83b56c44c430f154684a23
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Thu Jan 13 10:34:37 2022 +0530
stdlib: Sort tests in Makefile
Put one test per line and sort them.
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 5b766603efa727c236a5f0cdcf09b71ff60b7584)
diff --git a/stdlib/Makefile b/stdlib/Makefile
index 7c15549cafa8e397..6a1c3580bd1648ee 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -65,30 +65,81 @@ aux = grouping groupingwc tens_in_limb
static-only-routines = atexit at_quick_exit
test-srcs := tst-fmtmsg
-tests := tst-strtol tst-strtod testmb testrand testsort testdiv \
- test-canon test-canon2 tst-strtoll tst-environ \
- tst-xpg-basename tst-random tst-random2 tst-bsearch \
- tst-limits tst-rand48 bug-strtod tst-setcontext \
- tst-setcontext2 test-a64l tst-qsort testmb2 \
- bug-strtod2 tst-atof1 tst-atof2 tst-strtod2 \
- tst-rand48-2 tst-makecontext tst-strtod5 \
- tst-qsort2 tst-makecontext2 tst-strtod6 tst-unsetenv1 \
- tst-makecontext3 bug-getcontext bug-fmtmsg1 \
- tst-secure-getenv tst-strtod-overflow tst-strtod-round \
- tst-tininess tst-strtod-underflow tst-setcontext3 \
- tst-strtol-locale tst-strtod-nan-locale tst-strfmon_l \
- tst-quick_exit tst-thread-quick_exit tst-width \
- tst-width-stdint tst-strfrom tst-strfrom-locale \
- tst-getrandom tst-atexit tst-at_quick_exit \
- tst-cxa_atexit tst-on_exit test-atexit-race \
- test-at_quick_exit-race test-cxa_atexit-race \
- test-cxa_atexit-race2 \
- test-on_exit-race test-dlclose-exit-race \
- tst-makecontext-align test-bz22786 tst-strtod-nan-sign \
- tst-swapcontext1 tst-setcontext4 tst-setcontext5 \
- tst-setcontext6 tst-setcontext7 tst-setcontext8 \
- tst-setcontext9 tst-bz20544 tst-canon-bz26341 \
- tst-realpath
+tests := bug-fmtmsg1 \
+ bug-getcontext \
+ bug-strtod \
+ bug-strtod2 \
+ test-a64l \
+ test-at_quick_exit-race \
+ test-atexit-race \
+ test-bz22786 \
+ test-canon \
+ test-canon2 \
+ test-cxa_atexit-race \
+ test-cxa_atexit-race2 \
+ test-dlclose-exit-race \
+ test-on_exit-race \
+ testdiv \
+ testmb \
+ testmb2 \
+ testrand \
+ testsort \
+ tst-at_quick_exit \
+ tst-atexit \
+ tst-atof1 \
+ tst-atof2 \
+ tst-bsearch \
+ tst-bz20544 \
+ tst-canon-bz26341 \
+ tst-cxa_atexit \
+ tst-environ \
+ tst-getrandom \
+ tst-limits \
+ tst-makecontext \
+ tst-makecontext-align \
+ tst-makecontext2 \
+ tst-makecontext3 \
+ tst-on_exit \
+ tst-qsort \
+ tst-qsort2 \
+ tst-quick_exit \
+ tst-rand48 \
+ tst-rand48-2 \
+ tst-random \
+ tst-random2 \
+ tst-realpath \
+ tst-secure-getenv \
+ tst-setcontext \
+ tst-setcontext2 \
+ tst-setcontext3 \
+ tst-setcontext4 \
+ tst-setcontext5 \
+ tst-setcontext6 \
+ tst-setcontext7 \
+ tst-setcontext8 \
+ tst-setcontext9 \
+ tst-strfmon_l \
+ tst-strfrom \
+ tst-strfrom-locale \
+ tst-strtod \
+ tst-strtod-nan-locale \
+ tst-strtod-nan-sign \
+ tst-strtod-overflow \
+ tst-strtod-round \
+ tst-strtod-underflow \
+ tst-strtod2 \
+ tst-strtod5 \
+ tst-strtod6 \
+ tst-strtol \
+ tst-strtol-locale \
+ tst-strtoll \
+ tst-swapcontext1 \
+ tst-thread-quick_exit \
+ tst-tininess \
+ tst-unsetenv1 \
+ tst-width \
+ tst-width-stdint \
+ tst-xpg-basename
tests-internal := tst-strtod1i tst-strtod3 tst-strtod4 tst-strtod5i \
tst-tls-atexit tst-tls-atexit-nodelete

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@ -0,0 +1,173 @@
commit 73c362840c4efde45125a6c27bf41726397f4038
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Thu Jan 13 18:50:55 2022 +0530
stdlib: Fix formatting of tests list in Makefile
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
(cherry picked from commit f9dab1b5f23d0fb008a56c7c6c8919adb49d3611)
diff --git a/stdlib/Makefile b/stdlib/Makefile
index 6a1c3580bd1648ee..9bb5c221e8be3288 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -65,81 +65,83 @@ aux = grouping groupingwc tens_in_limb
static-only-routines = atexit at_quick_exit
test-srcs := tst-fmtmsg
-tests := bug-fmtmsg1 \
- bug-getcontext \
- bug-strtod \
- bug-strtod2 \
- test-a64l \
- test-at_quick_exit-race \
- test-atexit-race \
- test-bz22786 \
- test-canon \
- test-canon2 \
- test-cxa_atexit-race \
- test-cxa_atexit-race2 \
- test-dlclose-exit-race \
- test-on_exit-race \
- testdiv \
- testmb \
- testmb2 \
- testrand \
- testsort \
- tst-at_quick_exit \
- tst-atexit \
- tst-atof1 \
- tst-atof2 \
- tst-bsearch \
- tst-bz20544 \
- tst-canon-bz26341 \
- tst-cxa_atexit \
- tst-environ \
- tst-getrandom \
- tst-limits \
- tst-makecontext \
- tst-makecontext-align \
- tst-makecontext2 \
- tst-makecontext3 \
- tst-on_exit \
- tst-qsort \
- tst-qsort2 \
- tst-quick_exit \
- tst-rand48 \
- tst-rand48-2 \
- tst-random \
- tst-random2 \
- tst-realpath \
- tst-secure-getenv \
- tst-setcontext \
- tst-setcontext2 \
- tst-setcontext3 \
- tst-setcontext4 \
- tst-setcontext5 \
- tst-setcontext6 \
- tst-setcontext7 \
- tst-setcontext8 \
- tst-setcontext9 \
- tst-strfmon_l \
- tst-strfrom \
- tst-strfrom-locale \
- tst-strtod \
- tst-strtod-nan-locale \
- tst-strtod-nan-sign \
- tst-strtod-overflow \
- tst-strtod-round \
- tst-strtod-underflow \
- tst-strtod2 \
- tst-strtod5 \
- tst-strtod6 \
- tst-strtol \
- tst-strtol-locale \
- tst-strtoll \
- tst-swapcontext1 \
- tst-thread-quick_exit \
- tst-tininess \
- tst-unsetenv1 \
- tst-width \
- tst-width-stdint \
- tst-xpg-basename
+tests := \
+ bug-fmtmsg1 \
+ bug-getcontext \
+ bug-strtod \
+ bug-strtod2 \
+ test-a64l \
+ test-at_quick_exit-race \
+ test-atexit-race \
+ test-bz22786 \
+ test-canon \
+ test-canon2 \
+ test-cxa_atexit-race \
+ test-cxa_atexit-race2 \
+ test-dlclose-exit-race \
+ test-on_exit-race \
+ testdiv \
+ testmb \
+ testmb2 \
+ testrand \
+ testsort \
+ tst-at_quick_exit \
+ tst-atexit \
+ tst-atof1 \
+ tst-atof2 \
+ tst-bsearch \
+ tst-bz20544 \
+ tst-canon-bz26341 \
+ tst-cxa_atexit \
+ tst-environ \
+ tst-getrandom \
+ tst-limits \
+ tst-makecontext \
+ tst-makecontext-align \
+ tst-makecontext2 \
+ tst-makecontext3 \
+ tst-on_exit \
+ tst-qsort \
+ tst-qsort2 \
+ tst-quick_exit \
+ tst-rand48 \
+ tst-rand48-2 \
+ tst-random \
+ tst-random2 \
+ tst-realpath \
+ tst-secure-getenv \
+ tst-setcontext \
+ tst-setcontext2 \
+ tst-setcontext3 \
+ tst-setcontext4 \
+ tst-setcontext5 \
+ tst-setcontext6 \
+ tst-setcontext7 \
+ tst-setcontext8 \
+ tst-setcontext9 \
+ tst-strfmon_l \
+ tst-strfrom \
+ tst-strfrom-locale \
+ tst-strtod \
+ tst-strtod-nan-locale \
+ tst-strtod-nan-sign \
+ tst-strtod-overflow \
+ tst-strtod-round \
+ tst-strtod-underflow \
+ tst-strtod2 \
+ tst-strtod5 \
+ tst-strtod6 \
+ tst-strtol \
+ tst-strtol-locale \
+ tst-strtoll \
+ tst-swapcontext1 \
+ tst-thread-quick_exit \
+ tst-tininess \
+ tst-unsetenv1 \
+ tst-width \
+ tst-width-stdint \
+ tst-xpg-basename \
+# tests
tests-internal := tst-strtod1i tst-strtod3 tst-strtod4 tst-strtod5i \
tst-tls-atexit tst-tls-atexit-nodelete

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@ -0,0 +1,109 @@
commit f7a79879c0b2bef0dadd6caaaeeb0d26423e04e5
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Thu Jan 13 11:28:36 2022 +0530
realpath: Set errno to ENAMETOOLONG for result larger than PATH_MAX [BZ #28770]
realpath returns an allocated string when the result exceeds PATH_MAX,
which is unexpected when its second argument is not NULL. This results
in the second argument (resolved) being uninitialized and also results
in a memory leak since the caller expects resolved to be the same as the
returned value.
Return NULL and set errno to ENAMETOOLONG if the result exceeds
PATH_MAX. This fixes [BZ #28770], which is CVE-2021-3998.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit ee8d5e33adb284601c00c94687bc907e10aec9bb)
diff --git a/stdlib/Makefile b/stdlib/Makefile
index 9bb5c221e8be3288..a4ac30d1f6359561 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -109,6 +109,7 @@ tests := \
tst-random \
tst-random2 \
tst-realpath \
+ tst-realpath-toolong \
tst-secure-getenv \
tst-setcontext \
tst-setcontext2 \
diff --git a/stdlib/canonicalize.c b/stdlib/canonicalize.c
index 698f9ede25570ef2..7a23a51b3a395eb3 100644
--- a/stdlib/canonicalize.c
+++ b/stdlib/canonicalize.c
@@ -400,8 +400,16 @@ realpath_stk (const char *name, char *resolved,
error:
*dest++ = '\0';
- if (resolved != NULL && dest - rname <= get_path_max ())
- rname = strcpy (resolved, rname);
+ if (resolved != NULL)
+ {
+ if (dest - rname <= get_path_max ())
+ rname = strcpy (resolved, rname);
+ else
+ {
+ failed = true;
+ __set_errno (ENAMETOOLONG);
+ }
+ }
error_nomem:
scratch_buffer_free (&extra_buffer);
diff --git a/stdlib/tst-realpath-toolong.c b/stdlib/tst-realpath-toolong.c
new file mode 100644
index 0000000000000000..8bed772460b37571
--- /dev/null
+++ b/stdlib/tst-realpath-toolong.c
@@ -0,0 +1,49 @@
+/* Verify that realpath returns NULL with ENAMETOOLONG if the result exceeds
+ NAME_MAX.
+ Copyright The GNU Toolchain Authors.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <support/check.h>
+#include <support/temp_file.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#define BASENAME "tst-realpath-toolong."
+
+int
+do_test (void)
+{
+ char *base = support_create_and_chdir_toolong_temp_directory (BASENAME);
+
+ char buf[PATH_MAX + 1];
+ const char *res = realpath (".", buf);
+
+ /* canonicalize.c states that if the real path is >= PATH_MAX, then
+ realpath returns NULL and sets ENAMETOOLONG. */
+ TEST_VERIFY (res == NULL);
+ TEST_VERIFY (errno == ENAMETOOLONG);
+
+ free (base);
+ return 0;
+}
+
+#include <support/test-driver.c>

26
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@ -0,0 +1,26 @@
commit 8c8a71c85f2ed5cc90d08d82ce645513fc907cb6
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Mon Jan 24 10:57:09 2022 +0530
tst-realpath-toolong: Fix hurd build
Define PATH_MAX to a constant if it isn't already defined, like in hurd.
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 976db046bc3a3738f69255ae00b0a09b8e77fd9c)
diff --git a/stdlib/tst-realpath-toolong.c b/stdlib/tst-realpath-toolong.c
index 8bed772460b37571..4388890294374601 100644
--- a/stdlib/tst-realpath-toolong.c
+++ b/stdlib/tst-realpath-toolong.c
@@ -29,6 +29,10 @@
#define BASENAME "tst-realpath-toolong."
+#ifndef PATH_MAX
+# define PATH_MAX 1024
+#endif
+
int
do_test (void)
{

329
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@ -0,0 +1,329 @@
commit 472e799a5f2102bc0c3206dbd5a801765fceb39c
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Fri Jan 21 23:32:56 2022 +0530
getcwd: Set errno to ERANGE for size == 1 (CVE-2021-3999)
No valid path returned by getcwd would fit into 1 byte, so reject the
size early and return NULL with errno set to ERANGE. This change is
prompted by CVE-2021-3999, which describes a single byte buffer
underflow and overflow when all of the following conditions are met:
- The buffer size (i.e. the second argument of getcwd) is 1 byte
- The current working directory is too long
- '/' is also mounted on the current working directory
Sequence of events:
- In sysdeps/unix/sysv/linux/getcwd.c, the syscall returns ENAMETOOLONG
because the linux kernel checks for name length before it checks
buffer size
- The code falls back to the generic getcwd in sysdeps/posix
- In the generic func, the buf[0] is set to '\0' on line 250
- this while loop on line 262 is bypassed:
while (!(thisdev == rootdev && thisino == rootino))
since the rootfs (/) is bind mounted onto the directory and the flow
goes on to line 449, where it puts a '/' in the byte before the
buffer.
- Finally on line 458, it moves 2 bytes (the underflowed byte and the
'\0') to the buf[0] and buf[1], resulting in a 1 byte buffer overflow.
- buf is returned on line 469 and errno is not set.
This resolves BZ #28769.
Reviewed-by: Andreas Schwab <schwab@linux-m68k.org>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Signed-off-by: Qualys Security Advisory <qsa@qualys.com>
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e)
diff --git a/sysdeps/posix/getcwd.c b/sysdeps/posix/getcwd.c
index 13680026ffecbd51..b6984a382c3e1711 100644
--- a/sysdeps/posix/getcwd.c
+++ b/sysdeps/posix/getcwd.c
@@ -187,6 +187,13 @@ __getcwd_generic (char *buf, size_t size)
size_t allocated = size;
size_t used;
+ /* A size of 1 byte is never useful. */
+ if (allocated == 1)
+ {
+ __set_errno (ERANGE);
+ return NULL;
+ }
+
#if HAVE_MINIMALLY_WORKING_GETCWD
/* If AT_FDCWD is not defined, the algorithm below is O(N**2) and
this is much slower than the system getcwd (at least on
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index d30d21898b402d1e..cdc01a3f023ec09a 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -342,7 +342,12 @@ sysdep_routines += xstatconv internal_statvfs \
sysdep_headers += bits/fcntl-linux.h
-tests += tst-fallocate tst-fallocate64 tst-o_path-locks
+tests += \
+ tst-fallocate \
+ tst-fallocate64 \
+ tst-getcwd-smallbuff \
+ tst-o_path-locks \
+# tests
endif
ifeq ($(subdir),elf)
diff --git a/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c b/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c
new file mode 100644
index 0000000000000000..d460d6e7662dc5e4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c
@@ -0,0 +1,241 @@
+/* Verify that getcwd returns ERANGE for size 1 byte and does not underflow
+ buffer when the CWD is too long and is also a mount target of /. See bug
+ #28769 or CVE-2021-3999 for more context.
+ Copyright The GNU Toolchain Authors.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <intprops.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <support/check.h>
+#include <support/temp_file.h>
+#include <support/xsched.h>
+#include <support/xunistd.h>
+
+static char *base;
+#define BASENAME "tst-getcwd-smallbuff"
+#define MOUNT_NAME "mpoint"
+static int sockfd[2];
+
+static void
+do_cleanup (void)
+{
+ support_chdir_toolong_temp_directory (base);
+ TEST_VERIFY_EXIT (rmdir (MOUNT_NAME) == 0);
+ free (base);
+}
+
+static void
+send_fd (const int sock, const int fd)
+{
+ struct msghdr msg = {0};
+ union
+ {
+ struct cmsghdr hdr;
+ char buf[CMSG_SPACE (sizeof (int))];
+ } cmsgbuf = {0};
+ struct cmsghdr *cmsg;
+ struct iovec vec;
+ char ch = 'A';
+ ssize_t n;
+
+ msg.msg_control = &cmsgbuf.buf;
+ msg.msg_controllen = sizeof (cmsgbuf.buf);
+
+ cmsg = CMSG_FIRSTHDR (&msg);
+ cmsg->cmsg_len = CMSG_LEN (sizeof (int));
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ memcpy (CMSG_DATA (cmsg), &fd, sizeof (fd));
+
+ vec.iov_base = &ch;
+ vec.iov_len = 1;
+ msg.msg_iov = &vec;
+ msg.msg_iovlen = 1;
+
+ while ((n = sendmsg (sock, &msg, 0)) == -1 && errno == EINTR);
+
+ TEST_VERIFY_EXIT (n == 1);
+}
+
+static int
+recv_fd (const int sock)
+{
+ struct msghdr msg = {0};
+ union
+ {
+ struct cmsghdr hdr;
+ char buf[CMSG_SPACE(sizeof(int))];
+ } cmsgbuf = {0};
+ struct cmsghdr *cmsg;
+ struct iovec vec;
+ ssize_t n;
+ char ch = '\0';
+ int fd = -1;
+
+ vec.iov_base = &ch;
+ vec.iov_len = 1;
+ msg.msg_iov = &vec;
+ msg.msg_iovlen = 1;
+
+ msg.msg_control = &cmsgbuf.buf;
+ msg.msg_controllen = sizeof (cmsgbuf.buf);
+
+ while ((n = recvmsg (sock, &msg, 0)) == -1 && errno == EINTR);
+ if (n != 1 || ch != 'A')
+ return -1;
+
+ cmsg = CMSG_FIRSTHDR (&msg);
+ if (cmsg == NULL)
+ return -1;
+ if (cmsg->cmsg_type != SCM_RIGHTS)
+ return -1;
+ memcpy (&fd, CMSG_DATA (cmsg), sizeof (fd));
+ if (fd < 0)
+ return -1;
+ return fd;
+}
+
+static int
+child_func (void * const arg)
+{
+ xclose (sockfd[0]);
+ const int sock = sockfd[1];
+ char ch;
+
+ TEST_VERIFY_EXIT (read (sock, &ch, 1) == 1);
+ TEST_VERIFY_EXIT (ch == '1');
+
+ if (mount ("/", MOUNT_NAME, NULL, MS_BIND | MS_REC, NULL))
+ FAIL_EXIT1 ("mount failed: %m\n");
+ const int fd = xopen ("mpoint",
+ O_RDONLY | O_PATH | O_DIRECTORY | O_NOFOLLOW, 0);
+
+ send_fd (sock, fd);
+ xclose (fd);
+
+ TEST_VERIFY_EXIT (read (sock, &ch, 1) == 1);
+ TEST_VERIFY_EXIT (ch == 'a');
+
+ xclose (sock);
+ return 0;
+}
+
+static void
+update_map (char * const mapping, const char * const map_file)
+{
+ const size_t map_len = strlen (mapping);
+
+ const int fd = xopen (map_file, O_WRONLY, 0);
+ xwrite (fd, mapping, map_len);
+ xclose (fd);
+}
+
+static void
+proc_setgroups_write (const long child_pid, const char * const str)
+{
+ const size_t str_len = strlen(str);
+
+ char setgroups_path[sizeof ("/proc//setgroups") + INT_STRLEN_BOUND (long)];
+
+ snprintf (setgroups_path, sizeof (setgroups_path),
+ "/proc/%ld/setgroups", child_pid);
+
+ const int fd = open (setgroups_path, O_WRONLY);
+
+ if (fd < 0)
+ {
+ TEST_VERIFY_EXIT (errno == ENOENT);
+ FAIL_UNSUPPORTED ("/proc/%ld/setgroups not found\n", child_pid);
+ }
+
+ xwrite (fd, str, str_len);
+ xclose(fd);
+}
+
+static char child_stack[1024 * 1024];
+
+int
+do_test (void)
+{
+ base = support_create_and_chdir_toolong_temp_directory (BASENAME);
+
+ xmkdir (MOUNT_NAME, S_IRWXU);
+ atexit (do_cleanup);
+
+ TEST_VERIFY_EXIT (socketpair (AF_UNIX, SOCK_STREAM, 0, sockfd) == 0);
+ pid_t child_pid = xclone (child_func, NULL, child_stack,
+ sizeof (child_stack),
+ CLONE_NEWUSER | CLONE_NEWNS | SIGCHLD);
+
+ xclose (sockfd[1]);
+ const int sock = sockfd[0];
+
+ char map_path[sizeof ("/proc//uid_map") + INT_STRLEN_BOUND (long)];
+ char map_buf[sizeof ("0 1") + INT_STRLEN_BOUND (long)];
+
+ snprintf (map_path, sizeof (map_path), "/proc/%ld/uid_map",
+ (long) child_pid);
+ snprintf (map_buf, sizeof (map_buf), "0 %ld 1", (long) getuid());
+ update_map (map_buf, map_path);
+
+ proc_setgroups_write ((long) child_pid, "deny");
+ snprintf (map_path, sizeof (map_path), "/proc/%ld/gid_map",
+ (long) child_pid);
+ snprintf (map_buf, sizeof (map_buf), "0 %ld 1", (long) getgid());
+ update_map (map_buf, map_path);
+
+ TEST_VERIFY_EXIT (send (sock, "1", 1, MSG_NOSIGNAL) == 1);
+ const int fd = recv_fd (sock);
+ TEST_VERIFY_EXIT (fd >= 0);
+ TEST_VERIFY_EXIT (fchdir (fd) == 0);
+
+ static char buf[2 * 10 + 1];
+ memset (buf, 'A', sizeof (buf));
+
+ /* Finally, call getcwd and check if it resulted in a buffer underflow. */
+ char * cwd = getcwd (buf + sizeof (buf) / 2, 1);
+ TEST_VERIFY (cwd == NULL);
+ TEST_VERIFY (errno == ERANGE);
+
+ for (int i = 0; i < sizeof (buf); i++)
+ if (buf[i] != 'A')
+ {
+ printf ("buf[%d] = %02x\n", i, (unsigned int) buf[i]);
+ support_record_failure ();
+ }
+
+ TEST_VERIFY_EXIT (send (sock, "a", 1, MSG_NOSIGNAL) == 1);
+ xclose (sock);
+ TEST_VERIFY_EXIT (xwaitpid (child_pid, NULL, 0) == child_pid);
+
+ return 0;
+}
+
+#define CLEANUP_HANDLER do_cleanup
+#include <support/test-driver.c>

28
glibc-upstream-2.34-88.patch Normal file
View File

@ -0,0 +1,28 @@
commit d084965adc7baa8ea804427cccf973cea556d697
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Mon Jan 24 21:36:41 2022 +0530
realpath: Avoid overwriting preexisting error (CVE-2021-3998)
Set errno and failure for paths that are too long only if no other error
occurred earlier.
Related: BZ #28770
Reviewed-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 84d2d0fe20bdf94feed82b21b4d7d136db471f03)
diff --git a/stdlib/canonicalize.c b/stdlib/canonicalize.c
index 7a23a51b3a395eb3..e2d4244fc7b8fa25 100644
--- a/stdlib/canonicalize.c
+++ b/stdlib/canonicalize.c
@@ -404,7 +404,7 @@ error:
{
if (dest - rname <= get_path_max ())
rname = strcpy (resolved, rname);
- else
+ else if (!failed)
{
failed = true;
__set_errno (ENAMETOOLONG);

47
glibc-upstream-2.34-89.patch Normal file
View File

@ -0,0 +1,47 @@
commit 3438bbca90895d32825a52e31a77dc44d273c1c1
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Jan 24 18:14:24 2022 +0100
Linux: Detect user namespace support in io/tst-getcwd-smallbuff
Otherwise the test fails with certain container runtimes.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 5b8e7980c5dabd9aaefeba4f0208baa8cf7653ee)
diff --git a/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c b/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c
index d460d6e7662dc5e4..55362f6060a2b3be 100644
--- a/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c
+++ b/sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c
@@ -34,6 +34,7 @@
#include <sys/un.h>
#include <support/check.h>
#include <support/temp_file.h>
+#include <support/test-driver.h>
#include <support/xsched.h>
#include <support/xunistd.h>
@@ -188,6 +189,23 @@ do_test (void)
xmkdir (MOUNT_NAME, S_IRWXU);
atexit (do_cleanup);
+ /* Check whether user namespaces are supported. */
+ {
+ pid_t pid = xfork ();
+ if (pid == 0)
+ {
+ if (unshare (CLONE_NEWUSER | CLONE_NEWNS) != 0)
+ _exit (EXIT_UNSUPPORTED);
+ else
+ _exit (0);
+ }
+ int status;
+ xwaitpid (pid, &status, 0);
+ TEST_VERIFY_EXIT (WIFEXITED (status));
+ if (WEXITSTATUS (status) != 0)
+ return WEXITSTATUS (status);
+ }
+
TEST_VERIFY_EXIT (socketpair (AF_UNIX, SOCK_STREAM, 0, sockfd) == 0);
pid_t child_pid = xclone (child_func, NULL, child_stack,
sizeof (child_stack),

38
glibc.spec
View File

@ -148,7 +148,7 @@ end \
Summary: The GNU libc libraries
Name: glibc
Version: %{glibcversion}
Release: 20%{?dist}
Release: 21%{?dist}
# In general, GPLv2+ is used by programs, LGPLv2+ is used for
# libraries.
@ -338,6 +338,22 @@ Patch138: glibc-rh2040657-9.patch
Patch139: glibc-rh2040657-10.patch
Patch140: glibc-rh2040657-11.patch
Patch141: glibc-rh2040657-12.patch
Patch142: glibc-upstream-2.34-74.patch
Patch143: glibc-upstream-2.34-75.patch
Patch144: glibc-upstream-2.34-76.patch
Patch145: glibc-upstream-2.34-77.patch
Patch146: glibc-upstream-2.34-78.patch
Patch147: glibc-upstream-2.34-79.patch
Patch148: glibc-upstream-2.34-80.patch
Patch149: glibc-upstream-2.34-81.patch
Patch150: glibc-upstream-2.34-82.patch
Patch151: glibc-upstream-2.34-83.patch
Patch152: glibc-upstream-2.34-84.patch
Patch153: glibc-upstream-2.34-85.patch
Patch154: glibc-upstream-2.34-86.patch
Patch155: glibc-upstream-2.34-87.patch
Patch156: glibc-upstream-2.34-88.patch
Patch157: glibc-upstream-2.34-89.patch
##############################################################################
# Continued list of core "glibc" package information:
@ -2381,6 +2397,26 @@ fi
%files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
%changelog
* Mon Jan 24 2022 Florian Weimer <fweimer@redhat.com> - 2.34-21
- Sync with upstream branch release/2.34/master,
commit 3438bbca90895d32825a52e31a77dc44d273c1c1:
- Linux: Detect user namespace support in io/tst-getcwd-smallbuff
- realpath: Avoid overwriting preexisting error
- CVE-2021-3999: getcwd: Set errno to ERANGE for size == 1
- tst-realpath-toolong: Fix hurd build
- CVE-2021-3998: realpath: ENAMETOOLONG for result larger than PATH_MAX
- stdlib: Fix formatting of tests list in Makefile
- stdlib: Sort tests in Makefile
- support: Add helpers to create paths longer than PATH_MAX
- powerpc: Fix unrecognized instruction errors with recent binutils
- x86: use default cache size if it cannot be determined [BZ #28784]
- CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug 28768)
- sunrpc: Test case for clnt_create "unix" buffer overflow (bug 22542)
- CVE-2022-23219: Buffer overflow in sunrpc clnt_create for "unix" (bug 22542)
- socket: Add the __sockaddr_un_set function
- Disable debuginfod in printer tests [BZ #28757]
- Update syscall lists for Linux 5.16
* Wed Jan 19 2022 Florian Weimer <fweimer@redhat.com> - 2.34-20
- More reliable CPU compatibility diagnostics (#2040657)