gst-ffmpeg: fix for Security Advisory CVE-2013-0851

The decode_frame function in libavcodec/eamad.c in FFmpeg before 1.1
allows remote attackers to have an unspecified impact via crafted
Electronic Arts Madcow video data, which triggers an out-of-bounds array
access.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-0851

(From OE-Core rev: 8c9868d074f5d09022efc9419ee09eb805f68394)

Signed-off-by: Yue Tao <Yue.Tao@windriver.com>
Signed-off-by: Roy Li <rongqing.li@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 30 insertions, 0 deletions

diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-eamad-fix-out-of-array-accesses.patch b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-eamad-fix-out-of-array-accesses.patch
new file mode 100644
index 0000000000..f45e3fd59d
--- /dev/null
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-eamad-fix-out-of-array-accesses.patch
@@ -0,0 +1,29 @@
+From 63ac64864c6e0e84355aa3caa5b92208997a9a8d Mon Sep 17 00:00:00 2001
+From: Michael Niedermayer <michaelni@gmx.at>
+Date: Sat, 17 Nov 2012 16:26:55 +0100
+Subject: [PATCH] eamad: fix out of array accesses
+
+Upstream-Status: Backport
+
+Commit 63ac64864c6e0e84355aa3caa5b92208997a9a8d release/1.1
+
+Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
+Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
+---
+ libavcodec/eamad.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libavcodec/eamad.c b/libavcodec/eamad.c
+index 2805195..e38650e 100644
+--- a/gst-libs/ext/libav/libavcodec/eamad.c
++++ b/gst-libs/ext/libav/libavcodec/eamad.c
+@@ -237,7 +237,7 @@ static int decode_frame(AVCodecContext *avctx,
+     int chunk_type;
+     int inter;
+ 
+-    if (buf_size < 17) {
++    if (buf_size < 26) {
+         av_log(avctx, AV_LOG_ERROR, "Input buffer too small\n");
+         *data_size = 0;
+         return -1;
+-- 
diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb b/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
index a603ff5d48..0d0ba9a3ae 100644
--- a/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
@@ -31,6 +31,7 @@ SRC_URI = "http://gstreamer.freedesktop.org/src/${BPN}/${BPN}-${PV}.tar.bz2 \
            file://0001-alsdec-check-block-length.patch \
            file://0001-pgssubdec-check-RLE-size-before-copying.-Fix-out-of-.patch \
            file://0001-atrac3dec-Check-coding-mode-against-channels.patch \
+           file://0001-eamad-fix-out-of-array-accesses.patch \
 "
 
 SRC_URI[md5sum] = "7f5beacaf1312db2db30a026b36888c4"