binutls: Security fix CVE-2017-14934

Affects: <= 2.29.1

Signed-off-by: Armin Kuster <akuster@mvista.com>

diff --git a/meta/recipes-devtools/binutils/binutils-2.29.1.inc b/meta/recipes-devtools/binutils/binutils-2.29.1.inc
index 78b5249ee1aa3477412b5e6e0252cc18f090ca93..1962f5c303cc96aa46a432ef14de180a38f48b8c 100644 (file)
--- a/meta/recipes-devtools/binutils/binutils-2.29.1.inc
+++ b/meta/recipes-devtools/binutils/binutils-2.29.1.inc
@@ -40,6 +40,7 @@ SRC_URI = "\
      file://CVE-2017-14932.patch \
      file://CVE-2017-14933_p1.patch \
      file://CVE-2017-14933_p2.patch \
+     file://CVE-2017-14934.patch \
 "
 S  = "${WORKDIR}/git"
 

diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2017-14934.patch b/meta/recipes-devtools/binutils/binutils/CVE-2017-14934.patch
new file mode 100644 (file)
index 0000000..57733f0
--- /dev/null
+++ b/meta/recipes-devtools/binutils/binutils/CVE-2017-14934.patch
@@ -0,0 +1,63 @@
+From 19485196044b2521af979f1e5c4a89bfb90fba0b Mon Sep 17 00:00:00 2001
+From: Nick Clifton <nickc@redhat.com>
+Date: Wed, 27 Sep 2017 10:42:51 +0100
+Subject: [PATCH] Prevent an infinite loop in the DWARF parsing code when
+ encountering a CU structure with a small negative size.
+
+       PR 22219
+       * dwarf.c (process_debug_info): Add a check for a negative
+       cu_length field.
+
+Upstream-Status: Backport
+Affects: <= 2.29.1
+CVE: CVE-2017-14934
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+---
+ binutils/ChangeLog |  6 ++++++
+ binutils/dwarf.c   | 11 ++++++++++-
+ 2 files changed, 16 insertions(+), 1 deletion(-)
+
+Index: git/binutils/dwarf.c
+===================================================================
+--- git.orig/binutils/dwarf.c
++++ git/binutils/dwarf.c
+@@ -2547,7 +2547,7 @@ process_debug_info (struct dwarf_section
+       int level, last_level, saved_level;
+       dwarf_vma cu_offset;
+       unsigned int offset_size;
+-      int initial_length_size;
++      unsigned int initial_length_size;
+       dwarf_vma signature_high = 0;
+       dwarf_vma signature_low = 0;
+       dwarf_vma type_offset = 0;
+@@ -2695,6 +2695,15 @@ process_debug_info (struct dwarf_section
+         num_units = unit;
+         break;
+       }
++      else if (compunit.cu_length + initial_length_size < initial_length_size)
++      {
++        warn (_("Debug info is corrupted, length of CU at %s is negative (%s)\n"),
++              dwarf_vmatoa ("x", cu_offset),
++              dwarf_vmatoa ("x", compunit.cu_length));
++        num_units = unit;
++        break;
++      }
++
+       tags = hdrptr;
+       start += compunit.cu_length + initial_length_size;
+ 
+Index: git/binutils/ChangeLog
+===================================================================
+--- git.orig/binutils/ChangeLog
++++ git/binutils/ChangeLog
+@@ -1,3 +1,9 @@
++2017-09-27  Nick Clifton  <nickc@redhat.com>
++
++       PR 22219
++       * dwarf.c (process_debug_info): Add a check for a negative
++       cu_length field.
++
+ 2017-11-01  Alan Modra  <amodra@gmail.com>
+ 
+       Apply from master