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Binutils: Security fix for CVE-2018-7642

Browse Source 
Affects: <= 2.30

(From OE-Core rev: a424ac771bfceed2cef4dad8c0fd698764bc62a6)

Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Armin Kuster
2018-08-08 14:05:09 -07:00
committed by Richard Purdie
parent bdb3981466
commit b33d89d5ea
2 changed files with 52 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta/recipes-devtools/binutils/binutils-2.29.1.inc
+1
View File
@@ -76,6 +76,7 @@ SRC_URI = "\
file://CVE-2018-7568_p1.patch \
file://CVE-2018-7568_p2.patch \
file://CVE-2018-7569.patch \
file://CVE-2018-7642.patch \
"
S = "${WORKDIR}/git"
meta/recipes-devtools/binutils/binutils/CVE-2018-7642.patch
+51
View File
@@ -0,0 +1,51 @@
From 116acb2c268c89c89186673a7c92620d21825b25 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Wed, 28 Feb 2018 22:09:50 +1030
Subject: [PATCH] PR22887, null pointer dereference in
aout_32_swap_std_reloc_out
PR 22887
* aoutx.h (swap_std_reloc_in): Correct r_index bound check.
Upstream-Status: Backport
Affects: <= 2.30
CVE: CVE-2018-7642
Signed-off-by: Armin Kuster <akuster@mvista.com>
---
bfd/ChangeLog | 5 +++++
bfd/aoutx.h | 6 ++++--
2 files changed, 9 insertions(+), 2 deletions(-)
Index: git/bfd/ChangeLog
===================================================================
--- git.orig/bfd/ChangeLog
+++ git/bfd/ChangeLog
@@ -1,3 +1,8 @@
+2018-02-28 Alan Modra <amodra@gmail.com>
+
+ PR 22887
+ * aoutx.h (swap_std_reloc_in): Correct r_index bound check.
+
2018-02-28 Nick Clifton <nickc@redhat.com>
PR 22895
Index: git/bfd/aoutx.h
===================================================================
--- git.orig/bfd/aoutx.h
+++ git/bfd/aoutx.h
@@ -2211,10 +2211,12 @@ NAME (aout, swap_ext_reloc_in) (bfd *abf
|| r_type == (unsigned int) RELOC_BASE22)
r_extern = 1;
- if (r_extern && r_index > symcount)
+ if (r_extern && r_index >= symcount)
{
/* We could arrange to return an error, but it might be useful
- to see the file even if it is bad. */
+ to see the file even if it is bad. FIXME: Of course this
+ means that objdump -r *doesn't* see the actual reloc, and
+ objcopy silently writes a different reloc. */
r_extern = 0;
r_index = N_ABS;
}