[glibc/f17] - Fix use-after-free in dcigettext.c (#816647).
Jeffrey Law
law at fedoraproject.org
Thu Jun 21 18:14:46 UTC 2012
commit 87db5ca47f429fa8d3574247cefb8c8791aef0bf
Author: Jeff Law <law at redhat.com>
Date: Thu Jun 21 12:14:39 2012 -0600
- Fix use-after-free in dcigettext.c (#816647).
glibc-rh816647.patch | 25 +++++++++++++++++++++++++
glibc.spec | 9 ++++++++-
2 files changed, 33 insertions(+), 1 deletions(-)
---
diff --git a/glibc-rh816647.patch b/glibc-rh816647.patch
new file mode 100644
index 0000000..1880121
--- /dev/null
+++ b/glibc-rh816647.patch
@@ -0,0 +1,25 @@
+2012-06-21 Jeff Law <law at redhat.com>
+
+ * intl/dcigettext.c (_nl_find_msg): Do not dereference memory
+ that may have just been free'd.
+
+diff --git a/intl/dcigettext.c b/intl/dcigettext.c
+index f6b7573..9c673d4 100644
+--- a/intl/dcigettext.c
++++ b/intl/dcigettext.c
+@@ -1149,13 +1149,14 @@ _nl_find_msg (domain_file, domainbinding, msgid, convert, lengthp)
+ /* We must allocate a new buffer or resize the old one. */
+ if (malloc_count > 0)
+ {
++ struct transmem_list *next = transmem_list->next;
+ ++malloc_count;
+ freemem_size = malloc_count * INITIAL_BLOCK_SIZE;
+ newmem = (transmem_block_t *) realloc (transmem_list,
+ freemem_size);
+ # ifdef _LIBC
+ if (newmem != NULL)
+- transmem_list = transmem_list->next;
++ transmem_list = next;
+ else
+ {
+ struct transmem_list *old = transmem_list;
diff --git a/glibc.spec b/glibc.spec
index 0d44353..4f051fd 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -28,7 +28,7 @@
Summary: The GNU libc libraries
Name: glibc
Version: %{glibcversion}
-Release: 48%{?dist}
+Release: 49%{?dist}
# GPLv2+ is used in a bunch of programs, LGPLv2+ is used for libraries.
# Things that are linked directly into dynamically linked programs
# and shared libraries (e.g. crt files, lib*_nonshared.a) have an additional
@@ -205,6 +205,9 @@ Patch2060: %{name}-rh804630.patch
# Upstream BZ 14247
Patch2061: %{name}-rh827510.patch
+# Upstream BZ 14277
+Patch2062: %{name}-rh816647.patch
+
Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
Obsoletes: glibc-profile < 2.4
Obsoletes: nss_db
@@ -491,6 +494,7 @@ popd
%patch2059 -p1
%patch2060 -p1
%patch2061 -p1
+%patch2062 -p1
# A lot of programs still misuse memcpy when they have to use
# memmove. The memcpy implementation below is not tolerant at
@@ -1357,6 +1361,9 @@ rm -f *.filelist*
%endif
%changelog
+* Thu Jun 20 2012 Jeff Law <law at redhat.com> - 2.15.49
+ - Fix use-after-free in dcigettext.c (#816647).
+
* Tue Jun 19 2012 Dennis Gilmore <dennis at ausil.us> - 2.15-48
- remove armhfp linker changes needs more testing in rawhide before we consider backporting to f17
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