Fix an out-of-buffer read while parsing a Unicode property name

perl-5.31.0-PATCH-perl-134134-read-beyond-end-of-buffer.patch

@@ -0,0 +1,41 @@
+From 2d26cf4aed90a77ac5e93ddec29770756027b788 Mon Sep 17 00:00:00 2001
+From: Karl Williamson <khw@cpan.org>
+Date: Fri, 24 May 2019 09:15:59 -0600
+Subject: [PATCH] PATCH: [perl #134134] read beyond end of buffer
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This turns out to be because of a special input case in myatof3(),
+wherein if the input length is 0, it call strlen to find the length.
+
+The solution is to add a test and not call the function unless the
+length is positive.
+
+Signed-off-by: Petr Písař <ppisar@redhat.com>
+---
+ regcomp.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/regcomp.c b/regcomp.c
+index 9bd6dd3739..3ad09c52b2 100644
+--- a/regcomp.c
++++ b/regcomp.c
+@@ -23428,10 +23428,12 @@ Perl_parse_uniprop_string(pTHX_
+                  * NV. */
+ 
+                 NV value;
++                SSize_t value_len = lookup_len - equals_pos;
+ 
+                 /* Get the value */
+-                if (my_atof3(lookup_name + equals_pos, &value,
+-                             lookup_len - equals_pos)
++                if (   value_len <= 0
++                    || my_atof3(lookup_name + equals_pos, &value,
++                                value_len)
+                           != lookup_name + lookup_len)
+                 {
+                     goto failed;
+-- 
+2.20.1
+

perl.spec

@@ -83,7 +83,7 @@ License:        GPL+ or Artistic
 Epoch:          %{perl_epoch}
 Version:        %{perl_version}
 # release number must be even higher, because dual-lived modules will be broken otherwise
-Release:        439%{?dist}
+Release:        440%{?dist}
 Summary:        Practical Extraction and Report Language
 Url:            https://www.perl.org/
 Source0:        https://www.cpan.org/src/5.0/perl-%{perl_version}.tar.xz
@@ -147,6 +147,10 @@ Patch12:        perl-5.27.8-hints-linux-Add-lphtread-to-lddlflags.patch
 # Pass the correct CFLAGS to dtrace
 Patch13:        perl-5.28.0-Pass-CFLAGS-to-dtrace.patch
 
+# Fix an out-of-buffer read while parsing a Unicode property name, RT#134134,
+# fixed after 5.31.0
+Patch14:        perl-5.31.0-PATCH-perl-134134-read-beyond-end-of-buffer.patch
+
 # Link XS modules to libperl.so with EU::CBuilder on Linux, bug #960048
 Patch200:       perl-5.16.3-Link-XS-modules-to-libperl.so-with-EU-CBuilder-on-Li.patch
 
@@ -2678,6 +2682,7 @@ Perl extension for Version Objects
 %patch11 -p1
 %patch12 -p1
 %patch13 -p1
+%patch14 -p1
 %patch200 -p1
 %patch201 -p1
 
@@ -2698,6 +2703,7 @@ perl -x patchlevel.h \
     'Fedora Patch11: Replace EU::MakeMaker dependency with EU::MM::Utils in IPC::Cmd (bug #1129443)' \
     'Fedora Patch12: Link XS modules to pthread library to fix linking with -z defs' \
     'Fedora Patch13: Pass the correct CFLAGS to dtrace' \
+    'Fedora Patch14: Fix an out-of-buffer read while parsing a Unicode property name (RT#134134)' \
     'Fedora Patch200: Link XS modules to libperl.so with EU::CBuilder on Linux' \
     'Fedora Patch201: Link XS modules to libperl.so with EU::MM on Linux' \
     %{nil}
@@ -4943,6 +4949,9 @@ popd
 
 # Old changelog entries are preserved in CVS.
 %changelog
+* Tue Jun 25 2019 Petr Pisar <ppisar@redhat.com> - 4:5.30.0-440
+- Fix an out-of-buffer read while parsing a Unicode property name (RT#134134)
+
 * Tue Jun 11 2019 Jitka Plesnikova <jplesnik@redhat.com> - 4:5.30.0-439
 - Define %%perl_vendor*, %%perl_archlib, %%perl_privlib, because in rpm
   4.15 those are no longer defined