[OE-core] [PATCH 11/16] gst-ffmpeg: Security Advisory - ffmpeg - CVE-2011-3944
rongqing.li at windriver.com
rongqing.li at windriver.com
Tue Jul 22 07:46:46 UTC 2014
From: Yue Tao <Yue.Tao at windriver.com>
The smacker_decode_header_tree function in libavcodec/smacker.c in
FFmpeg before 0.10 allows remote attackers to have an unspecified impact
via crafted Smacker data.
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-3944
file://0001-huffyuvdec-check-width-more-completely-avoid-out-of-.patch \
Signed-off-by: Yue Tao <Yue.Tao at windriver.com>
Signed-off-by: Roy Li <rongqing.li at windriver.com>
---
...Check-that-the-last-indexes-are-within-th.patch | 32 ++++++++++++++++++++
.../gstreamer/gst-ffmpeg_0.10.13.bb | 1 +
2 files changed, 33 insertions(+)
create mode 100644 meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-smackerdec-Check-that-the-last-indexes-are-within-th.patch
diff --git a/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-smackerdec-Check-that-the-last-indexes-are-within-th.patch b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-smackerdec-Check-that-the-last-indexes-are-within-th.patch
new file mode 100644
index 0000000..15b1614
--- /dev/null
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg-0.10.13/0001-smackerdec-Check-that-the-last-indexes-are-within-th.patch
@@ -0,0 +1,32 @@
+gst-ffmpeg: smackerdec: Check that the last indexes are within the
+ table.
+
+Fixes CVE-2011-3944
+
+Upstream-Status: Backport
+
+Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
+Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
+---
+ libavcodec/smacker.c | 5 +++++
+ 1 files changed, 5 insertions(+), 0 deletions(-)
+
+diff --git a/libavcodec/smacker.c b/libavcodec/smacker.c
+index 30f99b4..2a8bae8 100644
+--- a/gst-libs/ext/libav/libavcodec/smacker.c
++++ b/gst-libs/ext/libav/libavcodec/smacker.c
+@@ -259,6 +259,11 @@ static int smacker_decode_header_tree(SmackVContext *smk, GetBitContext *gb, int
+ if(ctx.last[0] == -1) ctx.last[0] = huff.current++;
+ if(ctx.last[1] == -1) ctx.last[1] = huff.current++;
+ if(ctx.last[2] == -1) ctx.last[2] = huff.current++;
++ if(huff.current > huff.length){
++ ctx.last[0] = ctx.last[1] = ctx.last[2] = 1;
++ av_log(smk->avctx, AV_LOG_ERROR, "bigtree damaged\n");
++ return -1;
++ }
+
+ *recodes = huff.values;
+
+--
+1.7.5.4
+
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 7e3d7d6..a540211 100644
--- a/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
+++ b/meta/recipes-multimedia/gstreamer/gst-ffmpeg_0.10.13.bb
@@ -47,6 +47,7 @@ SRC_URI = "http://gstreamer.freedesktop.org/src/${BPN}/${BPN}-${PV}.tar.bz2 \
file://gst-ffmpeg-CVE-2013-0855.patch \
file://0001-qdm2dec-fix-buffer-overflow.patch \
file://0001-huffyuvdec-check-width-more-completely-avoid-out-of-.patch \
+ file://0001-smackerdec-Check-that-the-last-indexes-are-within-th.patch \
"
SRC_URI[md5sum] = "7f5beacaf1312db2db30a026b36888c4"
--
1.7.10.4
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