gst-ffmpeg: h264_sei: Fix infinite loop. Fixsot yet fixed parts of CVE-2011-3946. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer Upstream-Status: Backport Signed-off-by: Yue Tao --- libavcodec/h264_sei.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/libavcodec/h264_sei.c b/libavcodec/h264_sei.c index 374e53d..80d70e5 100644 --- a/gst-libs/ext/libav/libavcodec/h264_sei.c +++ b/gst-libs/ext/libav/libavcodec/h264_sei.c @@ -169,11 +169,15 @@ int ff_h264_decode_sei(H264Context *h){ type=0; do{ + if (get_bits_left(&s->gb) < 8) + return -1; type+= show_bits(&s->gb, 8); }while(get_bits(&s->gb, 8) == 255); size=0; do{ + if (get_bits_left(&s->gb) < 8) + return -1; size+= show_bits(&s->gb, 8); }while(get_bits(&s->gb, 8) == 255); -- 1.7.5.4