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fix allocation errors with malformed sa files

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- reorder patches to prevent errors during their application

Resolves: RHEL-35684
This commit is contained in:
Lukáš Zaoral 2024-05-07 17:09:47 +02:00
parent 9ccd0aa7ee
commit 0d73b18538
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GPG Key ID: 39157506DD67752D
3 changed files with 277 additions and 20 deletions
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47
sysstat-12.5.4-CVE-2023-33204.patch
View File

@ -1,23 +1,36 @@
From 954ff2e2673cef48f0ed44668c466eab041db387 Mon Sep 17 00:00:00 2001
From: Pavel Kopylov <pkopylov@cloudlinux.com>
Date: Wed, 17 May 2023 11:33:45 +0200
Subject: [PATCH] Fix an overflow which is still possible for some values.
From commit 6f8dc568e6ab072bb8205b732f04e685bf9237c0
From: Sebastien GODARD <sysstat@users.noreply.github.com>
Date: Wed, May 17 21:10:31 2023 +0200
Subject: Merge branch 'pkopylov-master'
Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>
diff --git a/common.c b/common.c
index 583a0ca..6d73b1b 100644
index 48493b5f..0efe7ee3 100644
--- a/common.c
+++ b/common.c
@@ -1639,9 +1639,11 @@ int parse_values(char *strargv, unsigned char bitmap[], int max_val, const char
*/
void check_overflow(size_t val1, size_t val2, size_t val3)
@@ -431,15 +431,17 @@ int check_dir(char *dirname)
void check_overflow(unsigned int val1, unsigned int val2,
unsigned int val3)
{
- if ((unsigned long long) val1 *
- (unsigned long long) val2 *
- if ((unsigned long long) val1 * (unsigned long long) val2 *
- (unsigned long long) val3 > UINT_MAX) {
+if ((val1 != 0) && (val2 != 0) && (val3 != 0) &&
+ (((unsigned long long)UINT_MAX / (unsigned long long)val1 <
+ (unsigned long long)val2) ||
+ ((unsigned long long)UINT_MAX / ((unsigned long long)val1 *
+ (unsigned long long)val2) < (unsigned long long)val3))) {
+ if ((val1 != 0) && (val2 != 0) && (val3 != 0) &&
+ (((unsigned long long) UINT_MAX / (unsigned long long) val1 <
+ (unsigned long long) val2) ||
+ ((unsigned long long) UINT_MAX / ((unsigned long long) val1 * (unsigned long long) val2) <
+ (unsigned long long) val3))) {
#ifdef DEBUG
fprintf(stderr, "%s: Overflow detected (%llu). Aborting...\n",
__FUNCTION__,
- fprintf(stderr, "%s: Overflow detected (%llu). Aborting...\n",
- __FUNCTION__, (unsigned long long) val1 * (unsigned long long) val2 *
- (unsigned long long) val3);
+ fprintf(stderr, "%s: Overflow detected (%u,%u,%u). Aborting...\n",
+ __FUNCTION__, val1, val2, val3);
#endif
- exit(4);
- }
+ exit(4);
+ }
}
#ifndef SOURCE_SADC

235
sysstat-12.5.4-RHEL-35684.patch Normal file
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@ -0,0 +1,235 @@
From c9a11d35df4aecfcf22aef827bac6cd57def9d4e Mon Sep 17 00:00:00 2001
From: Sebastien GODARD <sysstat@users.noreply.github.com>
Date: Sun, 23 Oct 2022 16:22:28 +0200
Subject: [PATCH] Add more overflow checks
Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>
---
common.c | 45 +++++++++++++++++++++------------------------
common.h | 4 ++--
sa_common.c | 9 +++++++--
sadc.c | 6 ++++++
4 files changed, 36 insertions(+), 28 deletions(-)
diff --git a/common.c b/common.c
index 1a84b052..27249772 100644
--- a/common.c
+++ b/common.c
@@ -415,6 +415,27 @@ int check_dir(char *dirname)
return 0;
}
+/*
+ * **************************************************************************
+ * Check if the multiplication of the 3 values may be greater than UINT_MAX.
+ *
+ * IN:
+ * @val1 First value.
+ * @val2 Second value.
+ * @val3 Third value.
+ ***************************************************************************
+ */
+void check_overflow(unsigned long long val1, unsigned long long val2,
+ unsigned long long val3)
+{
+ if (val1 * val2 * val3 > UINT_MAX) {
+#ifdef DEBUG
+ fprintf(stderr, "%s: Overflow detected (%llu). Aborting...\n",
+ __FUNCTION__, val1 * val2 * val3);
+#endif
+ exit(4);
+ }
+}
#ifndef SOURCE_SADC
/*
@@ -1656,28 +1677,4 @@ int parse_values(char *strargv, unsigned char bitmap[], int max_val, const char
return 0;
}
-/*
- ***************************************************************************
- * Check if the multiplication of the 3 values may be greater than UINT_MAX.
- *
- * IN:
- * @val1 First value.
- * @val2 Second value.
- * @val3 Third value.
- ***************************************************************************
- */
-void check_overflow(size_t val1, size_t val2, size_t val3)
-{
- if ((unsigned long long) val1 *
- (unsigned long long) val2 *
- (unsigned long long) val3 > UINT_MAX) {
-#ifdef DEBUG
- fprintf(stderr, "%s: Overflow detected (%llu). Aborting...\n",
- __FUNCTION__,
- (unsigned long long) val1 * (unsigned long long) val2 * (unsigned long long) val3);
-#endif
- exit(4);
- }
-}
-
#endif /* SOURCE_SADC undefined */
diff --git a/common.h b/common.h
index e8ab98ab..715b2da2 100644
--- a/common.h
+++ b/common.h
@@ -258,10 +258,10 @@ int get_wwnid_from_pretty
(char *, unsigned long long *, unsigned int *);
int check_dir
(char *);
+void check_overflow
+ (unsigned long long, unsigned long long, unsigned long long);
#ifndef SOURCE_SADC
-void check_overflow
- (size_t, size_t, size_t);
int count_bits
(void *, int);
int count_csvalues
diff --git a/sa_common.c b/sa_common.c
index b2cec4ad..3460257a 100644
--- a/sa_common.c
+++ b/sa_common.c
@@ -463,8 +463,9 @@ void allocate_structures(struct activity *act[])
if (act[i]->nr_ini > 0) {
/* Look for a possible overflow */
- check_overflow((size_t) act[i]->msize, (size_t) act[i]->nr_ini,
- (size_t) act[i]->nr2);
+ check_overflow((unsigned long long) act[i]->msize,
+ (unsigned long long) act[i]->nr_ini,
+ (unsigned long long) act[i]->nr2);
for (j = 0; j < 3; j++) {
SREALLOC(act[i]->buf[j], void,
@@ -529,6 +530,10 @@ void reallocate_all_buffers(struct activity *a, __nr_t nr_min)
while (nr_realloc < nr_min);
}
+ /* Look for a possible overflow */
+ check_overflow((unsigned long long) a->msize, nr_realloc,
+ (unsigned long long) a->nr2);
+
for (j = 0; j < 3; j++) {
SREALLOC(a->buf[j], void,
(size_t) a->msize * nr_realloc * (size_t) a->nr2);
diff --git a/sadc.c b/sadc.c
index 3458d089..123bf8e0 100644
--- a/sadc.c
+++ b/sadc.c
@@ -360,6 +360,12 @@ void sa_sys_init(void)
}
if (IS_COLLECTED(act[i]->options) && (act[i]->nr_ini > 0)) {
+
+ /* Look for a possible overflow */
+ check_overflow((unsigned long long) act[i]->msize,
+ (unsigned long long) act[i]->nr_ini,
+ (unsigned long long) act[i]->nr2);
+
/* Allocate structures for current activity (using nr_ini and nr2 results) */
SREALLOC(act[i]->_buf0, void,
(size_t) act[i]->msize * (size_t) act[i]->nr_ini * (size_t) act[i]->nr2);
From 44f1dc159242c1e434a3b836cda49f084c5a96cc Mon Sep 17 00:00:00 2001
From: Sebastien GODARD <sysstat@users.noreply.github.com>
Date: Sun, 6 Nov 2022 15:48:16 +0100
Subject: [PATCH] Make sure values to be compared are unsigned integers
It seems safer to make sure that input values are unsigned int before
casting them to unsigned long long and making the comparison.
Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>
---
common.c | 10 ++++++----
common.h | 2 +-
sa_common.c | 10 +++++-----
sadc.c | 6 +++---
4 files changed, 15 insertions(+), 13 deletions(-)
diff --git a/common.c b/common.c
index 27249772..3b7fdcd5 100644
--- a/common.c
+++ b/common.c
@@ -425,13 +425,15 @@ int check_dir(char *dirname)
* @val3 Third value.
***************************************************************************
*/
-void check_overflow(unsigned long long val1, unsigned long long val2,
- unsigned long long val3)
+void check_overflow(unsigned int val1, unsigned int val2,
+ unsigned int val3)
{
- if (val1 * val2 * val3 > UINT_MAX) {
+ if ((unsigned long long) val1 * (unsigned long long) val2 *
+ (unsigned long long) val3 > UINT_MAX) {
#ifdef DEBUG
fprintf(stderr, "%s: Overflow detected (%llu). Aborting...\n",
- __FUNCTION__, val1 * val2 * val3);
+ __FUNCTION__, (unsigned long long) val1 * (unsigned long long) val2 *
+ (unsigned long long) val3);
#endif
exit(4);
}
diff --git a/common.h b/common.h
index 715b2da2..fc8a1a0d 100644
--- a/common.h
+++ b/common.h
@@ -259,7 +259,7 @@ int get_wwnid_from_pretty
int check_dir
(char *);
void check_overflow
- (unsigned long long, unsigned long long, unsigned long long);
+ (unsigned int, unsigned int, unsigned int);
#ifndef SOURCE_SADC
int count_bits
diff --git a/sa_common.c b/sa_common.c
index 3460257a..0ca8b039 100644
--- a/sa_common.c
+++ b/sa_common.c
@@ -463,9 +463,9 @@ void allocate_structures(struct activity *act[])
if (act[i]->nr_ini > 0) {
/* Look for a possible overflow */
- check_overflow((unsigned long long) act[i]->msize,
- (unsigned long long) act[i]->nr_ini,
- (unsigned long long) act[i]->nr2);
+ check_overflow((unsigned int) act[i]->msize,
+ (unsigned int) act[i]->nr_ini,
+ (unsigned int) act[i]->nr2);
for (j = 0; j < 3; j++) {
SREALLOC(act[i]->buf[j], void,
@@ -531,8 +531,8 @@ void reallocate_all_buffers(struct activity *a, __nr_t nr_min)
}
/* Look for a possible overflow */
- check_overflow((unsigned long long) a->msize, nr_realloc,
- (unsigned long long) a->nr2);
+ check_overflow((unsigned int) a->msize, (unsigned int) nr_realloc,
+ (unsigned int) a->nr2);
for (j = 0; j < 3; j++) {
SREALLOC(a->buf[j], void,
diff --git a/sadc.c b/sadc.c
index 123bf8e0..40a1e15b 100644
--- a/sadc.c
+++ b/sadc.c
@@ -362,9 +362,9 @@ void sa_sys_init(void)
if (IS_COLLECTED(act[i]->options) && (act[i]->nr_ini > 0)) {
/* Look for a possible overflow */
- check_overflow((unsigned long long) act[i]->msize,
- (unsigned long long) act[i]->nr_ini,
- (unsigned long long) act[i]->nr2);
+ check_overflow((unsigned int) act[i]->msize,
+ (unsigned int) act[i]->nr_ini,
+ (unsigned int) act[i]->nr2);
/* Allocate structures for current activity (using nr_ini and nr2 results) */
SREALLOC(act[i]->_buf0, void,

15
sysstat.spec
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@ -1,7 +1,7 @@
Summary: Collection of performance monitoring tools for Linux
Name: sysstat
Version: 12.5.4
Release: 7%{?dist}
Release: 8%{?dist}
License: GPLv2+
URL: http://sebastien.godard.pagesperso-orange.fr/
Source: https://github.com/sysstat/sysstat/archive/v%{version}.tar.gz
@ -14,10 +14,15 @@ Source2: colorsysstat.sh
Patch1: sysstat-12.5.4-CVE-2022-39377.patch
# {cifsio,io,mp,pid}stat --dec and sar --dec report values from single alphabet other than defined (bz2080650)
Patch2: sysstat-12.5.4-bz2080650.patch
# fix allocation errors with malformed sa files (RHEL-35684)
# https://github.com/sysstat/sysstat/commit/c9a11d35df4aecfcf22aef827bac6cd57def9d4e
# https://github.com/sysstat/sysstat/commit/44f1dc159242c1e434a3b836cda49f084c5a96cc
Patch3: sysstat-12.5.4-RHEL-35684.patch
# check_overflow() function can work incorrectly that lead to an overflow (CVE-2023-33204)
Patch3: sysstat-12.5.4-CVE-2023-33204.patch
# https://github.com/sysstat/sysstat/commit/6f8dc568e6ab072bb8205b732f04e685bf9237c0
Patch4: sysstat-12.5.4-CVE-2023-33204.patch
# add description of UMASK to man/systat.in (bz2216805)
Patch4: sysstat-12.5.4-bz2216805.patch
Patch5: sysstat-12.5.4-bz2216805.patch
BuildRequires: make
BuildRequires: gcc, gettext, lm_sensors-devel, pcp-libs-devel, systemd, git
@ -95,6 +100,10 @@ fi
%{_localstatedir}/log/sa
%changelog
* Tue May 07 2024 Lukáš Zaoral <lzaoral@redhat.com> - 12.5.4-8
- fix allocation errors with malformed sa files (RHEL-35684)
- reorder patches to prevent errors during their application
* Thu Jul 27 2023 Lukáš Zaoral <lzaoral@redhat.com> - 12.5.4-7
- add description of UMASK to man/systat.in (rhbz#2216805)