diff options
Diffstat (limited to 'abs/core/elfutils/CVE-2014-0172.patch')
| -rw-r--r-- | abs/core/elfutils/CVE-2014-0172.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/abs/core/elfutils/CVE-2014-0172.patch b/abs/core/elfutils/CVE-2014-0172.patch new file mode 100644 index 0000000..5f9541d --- /dev/null +++ b/abs/core/elfutils/CVE-2014-0172.patch @@ -0,0 +1,37 @@ +From 7f1eec317db79627b473c5b149a22a1b20d1f68f Mon Sep 17 00:00:00 2001 +From: Mark Wielaard <mjw@redhat.com> +Date: Wed, 9 Apr 2014 11:33:23 +0200 +Subject: [PATCH] CVE-2014-0172 Check for overflow before calling malloc to + uncompress data. + +https://bugzilla.redhat.com/show_bug.cgi?id=1085663 + +Reported-by: Florian Weimer <fweimer@redhat.com> +Signed-off-by: Mark Wielaard <mjw@redhat.com> +diff --git a/libdw/dwarf_begin_elf.c b/libdw/dwarf_begin_elf.c +index 79daeac..34ea373 100644 +--- a/libdw/dwarf_begin_elf.c ++++ b/libdw/dwarf_begin_elf.c +@@ -1,5 +1,5 @@ + /* Create descriptor from ELF descriptor for processing file. +- Copyright (C) 2002-2011 Red Hat, Inc. ++ Copyright (C) 2002-2011, 2014 Red Hat, Inc. + This file is part of elfutils. + Written by Ulrich Drepper <drepper@redhat.com>, 2002. + +@@ -282,6 +282,12 @@ check_section (Dwarf *result, GElf_Ehdr *ehdr, Elf_Scn *scn, bool inscngrp) + memcpy (&size, data->d_buf + 4, sizeof size); + size = be64toh (size); + ++ /* Check for unsigned overflow so malloc always allocated ++ enough memory for both the Elf_Data header and the ++ uncompressed section data. */ ++ if (unlikely (sizeof (Elf_Data) + size < size)) ++ break; ++ + Elf_Data *zdata = malloc (sizeof (Elf_Data) + size); + if (unlikely (zdata == NULL)) + break; +-- +1.9.2 + |