binutils: Security fix for CVE-2017-14940

Affects: <= 2.29.1

(From OE-Core rev: 59deda9b709640030bc0199e34e39fa07cfcca69)

Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/binutils/binutils-2.29.1.inc

@@ -43,6 +43,7 @@ SRC_URI = "\
      file://CVE-2017-14934.patch \
      file://CVE-2017-14938.patch \
      file://CVE-2017-14939.patch \
+     file://CVE-2017-14940.patch \
 "
 S  = "${WORKDIR}/git"
 

meta/recipes-devtools/binutils/binutils/CVE-2017-14940.patch

@@ -0,0 +1,47 @@
+From 0d76029f92182c3682d8be2c833d45bc9a2068fe Mon Sep 17 00:00:00 2001
+From: Alan Modra <amodra@gmail.com>
+Date: Sun, 24 Sep 2017 14:35:33 +0930
+Subject: [PATCH] PR22167, NULL pointer dereference in scan_unit_for_symbols
+
+	PR 22167
+	* dwarf2.c (scan_unit_for_symbols): Check u.blk->data is non-NULL.
+
+Upstream-Status: Backport
+Affects: <= 2.29.1
+CVE: CVE-2017-14940
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+---
+ bfd/ChangeLog | 5 +++++
+ bfd/dwarf2.c  | 3 ++-
+ 2 files changed, 7 insertions(+), 1 deletion(-)
+
+Index: git/bfd/dwarf2.c
+===================================================================
+--- git.orig/bfd/dwarf2.c
++++ git/bfd/dwarf2.c
+@@ -3202,7 +3202,8 @@ scan_unit_for_symbols (struct comp_unit
+ 		    case DW_FORM_block2:
+ 		    case DW_FORM_block4:
+ 		    case DW_FORM_exprloc:
+-		      if (*attr.u.blk->data == DW_OP_addr)
++		      if (attr.u.blk->data != NULL
++			  && *attr.u.blk->data == DW_OP_addr)
+ 			{
+ 			  var->stack = 0;
+ 
+Index: git/bfd/ChangeLog
+===================================================================
+--- git.orig/bfd/ChangeLog
++++ git/bfd/ChangeLog
+@@ -1,5 +1,10 @@
+ 2017-09-24  Alan Modra  <amodra@gmail.com>
+  
++       PR 22167
++       * dwarf2.c (scan_unit_for_symbols): Check u.blk->data is non-NULL.
++
++2017-09-24  Alan Modra  <amodra@gmail.com>
++ 
+        PR 22169
+        * dwarf2.c (decode_line_info): Correct .debug_line unit_length check.
+