gst-ffmpeg: fix for Security Advisory CVE-2013-0858

The atrac3_decode_init function in libavcodec/atrac3.c in FFmpeg before
1.0.4 allows remote attackers to have an unspecified impact via ATRAC3
data with the joint stereo coding mode set and fewer than two channels.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-0858

(From OE-Core rev: 0ee8754c973f5eff3ba4d00319a5308888c12b17)

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, 38 insertions, 0 deletions

diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-atrac3dec-Check-coding-mode-against-channels.patch b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-atrac3dec-Check-coding-mode-against-channels.patch
new file mode 100644
index 0000000000..42cb5f40b4
--- /dev/null
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-atrac3dec-Check-coding-mode-against-channels.patch
@@ -0,0 +1,37 @@
+From 2502914c5f8eb77659d7c0868396862557a63245 Mon Sep 17 00:00:00 2001
+From: Michael Niedermayer <michaelni@gmx.at>
+Date: Fri, 9 Nov 2012 13:26:20 +0100
+Subject: [PATCH] atrac3dec: Check coding mode against channels.
+
+Upstream-Status: Backport
+
+Commit 2502914c5f8eb77659d7c0868396862557a63245 release/1.0
+
+Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
+Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
+(cherry picked from commit 13451f5520ce6b0afde861b2285dda659f8d4fb4)
+
+Conflicts:
+
+        libavcodec/atrac3.c
+---
+ libavcodec/atrac3.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/libavcodec/atrac3.c b/libavcodec/atrac3.c
+index 7d076be..1da4c78 100644
+--- a/gst-libs/ext/libav/libavcodec/atrac3.c
++++ b/gst-libs/ext/libav/libavcodec/atrac3.c
+@@ -955,6 +955,11 @@ static av_cold int atrac3_decode_init(AVCodecContext *avctx)
+     }
+     /* Check the extradata. */
+ 
++    if (q->codingMode == JOINT_STEREO && avctx->channels < 2) {
++        av_log(avctx, AV_LOG_ERROR, "Invalid coding mode\n");
++        return AVERROR_INVALIDDATA;
++    }
++
+     if (q->atrac3version != 4) {
+         av_log(avctx,AV_LOG_ERROR,"Version %d != 4.\n",q->atrac3version);
+         return AVERROR_INVALIDDATA;
+-- 
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 eded98bb32..a603ff5d48 100644
--- a/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
@@ -30,6 +30,7 @@ SRC_URI = "http://gstreamer.freedesktop.org/src/${BPN}/${BPN}-${PV}.tar.bz2 \
            file://0001-huffyuvdec-Check-init_vlc-return-codes.patch \
            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 \
 "
 
 SRC_URI[md5sum] = "7f5beacaf1312db2db30a026b36888c4"