virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-13 21:28:01 +02:00
Code Issues Releases Activity

avcodec/mpeg4videodec: Check mb_num also against 0

Browse Source 
The spec implies that 0 is invalid in addition to the existing checks

Found-by: <kierank>
Reviewed-by: Kieran Kunhya <kieran618@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 05f4703a16)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-01-28 02:29:00 +01:00
parent 2980b95faf
commit 6723a43609
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/mpeg4videodec.c
View File

@ -460,7 +460,7 @@ int ff_mpeg4_decode_video_packet_header(Mpeg4DecContext *ctx)
}
mb_num = get_bits(&s->gb, mb_num_bits);
if (mb_num >= s->mb_num) {
if (mb_num >= s->mb_num || !mb_num) {
av_log(s->avctx, AV_LOG_ERROR,
"illegal mb_num in video packet (%d %d) \n", mb_num, s->mb_num);
return -1;