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binutils: Security fix CVE-2017-8421 

Affects: <= 2.28

(From OE-Core rev: 7442e97d451047e5f8ed2e23f5898837a7d572a7)

Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Armin Kuster 2017-11-26 13:27:38 -08:00 committed by Richard Purdie
parent 5d2f47f2a2
commit ffdcca938b
2 changed files with 53 additions and 0 deletions
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1
meta/recipes-devtools/binutils/binutils-2.28.inc
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@ -50,6 +50,7 @@ SRC_URI = "\
file://CVE-2017-8395.patch \
file://CVE-2017-8396_8397.patch \
file://CVE-2017-8398.patch \
file://CVE-2017-8421.patch \
"
S = "${WORKDIR}/git"

52
meta/recipes-devtools/binutils/binutils/CVE-2017-8421.patch Normal file
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@ -0,0 +1,52 @@
From 39ff1b79f687b65f4144ddb379f22587003443fb Mon Sep 17 00:00:00 2001
From: Nick Clifton <nickc@redhat.com>
Date: Tue, 2 May 2017 11:54:53 +0100
Subject: [PATCH] Prevent memory exhaustion from a corrupt PE binary with an
overlarge number of relocs.
PR 21440
* objdump.c (dump_relocs_in_section): Check for an excessive
number of relocs before attempting to dump them.
Upstream-Status: Backport
CVE: CVE-2017-8421
Signed-off-by: Armin Kuster <akuster@mvista.com>
---
binutils/ChangeLog | 6 ++++++
binutils/objdump.c | 8 ++++++++
2 files changed, 14 insertions(+)
Index: git/binutils/objdump.c
===================================================================
--- git.orig/binutils/objdump.c
+++ git/binutils/objdump.c
@@ -3311,6 +3311,14 @@ dump_relocs_in_section (bfd *abfd,
return;
}
+ if ((bfd_get_file_flags (abfd) & (BFD_IN_MEMORY | BFD_LINKER_CREATED)) == 0
+ && relsize > get_file_size (bfd_get_filename (abfd)))
+ {
+ printf (" (too many: 0x%x)\n", section->reloc_count);
+ bfd_set_error (bfd_error_file_truncated);
+ bfd_fatal (bfd_get_filename (abfd));
+ }
+
relpp = (arelent **) xmalloc (relsize);
relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
Index: git/binutils/ChangeLog
===================================================================
--- git.orig/binutils/ChangeLog
+++ git/binutils/ChangeLog
@@ -1,3 +1,9 @@
+2017-05-02 Nick Clifton <nickc@redhat.com>
+
+ PR 21440
+ * objdump.c (dump_relocs_in_section): Check for an excessive
+ number of relocs before attempting to dump them.
+
2017-04-28 Nick Clifton <nickc@redhat.com>
PR binutils/21438