poky/meta/recipes-devtools/binutils/binutils/CVE-2018-7208.patch

From eb77f6a4621795367a39cdd30957903af9dbb815 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Sat, 27 Jan 2018 08:19:33 +1030
Subject: [PATCH] PR22741, objcopy segfault on fuzzed COFF object

	PR 22741
	* coffgen.c (coff_pointerize_aux): Ensure auxent tagndx is in
	range before converting to a symbol table pointer.

Upstream-Status: Backport
Affects: Binutils <= 2.30
CVE:  CVE-2018-7208
Signed-off-by: Armin Kuster <akuster@mvista.com>

---
 bfd/ChangeLog | 6 ++++++
 bfd/coffgen.c | 3 ++-
 2 files changed, 8 insertions(+), 1 deletion(-)

Index: git/bfd/coffgen.c
===================================================================
--- git.orig/bfd/coffgen.c
+++ git/bfd/coffgen.c
@@ -1555,7 +1555,8 @@ coff_pointerize_aux (bfd *abfd,
     }
   /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can
      generate one, so we must be careful to ignore it.  */
-  if (auxent->u.auxent.x_sym.x_tagndx.l > 0)
+  if ((unsigned long) auxent->u.auxent.x_sym.x_tagndx.l
+      < obj_raw_syment_count (abfd))
     {
       auxent->u.auxent.x_sym.x_tagndx.p =
 	table_base + auxent->u.auxent.x_sym.x_tagndx.l;
Index: git/bfd/ChangeLog
===================================================================
--- git.orig/bfd/ChangeLog
+++ git/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2018-01-29  Alan Modra  <amodra@gmail.com>
+
+       PR 22741
+       * coffgen.c (coff_pointerize_aux): Ensure auxent tagndx is in
+       range before converting to a symbol table pointer.
+
 2018-02-28  Alan Modra  <amodra@gmail.com>
 
        PR 22887