gst-ffmpeg: fix for Security Advisory CVE-2013-0854

The mjpeg_decode_scan_progressive_ac function in libavcodec/mjpegdec.c
in FFmpeg before 1.1 allows remote attackers to have an unspecified
impact via crafted MJPEG data.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-0854

(From OE-Core rev: b3d9c8f603ebdbc21cb2ba7e62f8b5ebb57c40c1)

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, 33 insertions, 0 deletions

diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-mjpegdec-check-SE.patch b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-mjpegdec-check-SE.patch
new file mode 100644
index 0000000000..d90bafac91
--- /dev/null
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-mjpegdec-check-SE.patch
@@ -0,0 +1,32 @@
+From 1f41cffe1e3e79620f587545bdfcbd7e6e68ed29 Mon Sep 17 00:00:00 2001
+From: Michael Niedermayer <michaelni@gmx.at>
+Date: Sun, 11 Nov 2012 00:01:24 +0100
+Subject: [PATCH] mjpegdec: check SE.
+
+Upstream-Status: Backport
+
+Commit 1f41cffe1e3e79620f587545bdfcbd7e6e68ed29 release/1.1
+
+Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
+Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
+---
+ libavcodec/mjpegdec.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
+index 6b5266d..0a71a6f 100644
+--- a/gst-libs/ext/libav/libavcodec/mjpegdec.c
++++ b/gst-libs/ext/libav/libavcodec/mjpegdec.c
+@@ -905,6 +905,11 @@ static int mjpeg_decode_scan_progressive
+     int16_t *quant_matrix = s->quant_matrixes[ s->quant_index[c] ];
+     GetBitContext mb_bitmask_gb;
+ 
++    if (se > 63) {
++        av_log(s->avctx, AV_LOG_ERROR, "SE %d is too large\n", se);
++        return AVERROR_INVALIDDATA;
++    }
++
+     if (mb_bitmask) {
+         init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width*s->mb_height);
+     }
+-- 
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 0d0ba9a3ae..28ea29e41b 100644
--- a/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
@@ -32,6 +32,7 @@ SRC_URI = "http://gstreamer.freedesktop.org/src/${BPN}/${BPN}-${PV}.tar.bz2 \
            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 \
+           file://0001-mjpegdec-check-SE.patch \
 "
 
 SRC_URI[md5sum] = "7f5beacaf1312db2db30a026b36888c4"