diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-07 02:46:54 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-16 16:00:22 +0200 |
| commit | 8464f25089258f3340bb394a147ecb7be6b7a832 (patch) | |
| tree | 9572f936a83c54640ac02ff3d80bc295c6d44abd | |
| parent | 47e2c70dcdbeb1200cb81355c6e2279750b3f676 (diff) | |
| download | ffmpeg-8464f25089258f3340bb394a147ecb7be6b7a832.tar.gz | |
avcodec/msmpeg4dec: Correct table depth
Fixes undefined shift
Fixes: 1381/clusterfuzz-testcase-minimized-5513944540119040
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 1121d9270783b284a70af317d8785eac7df1b72f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/msmpeg4dec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/msmpeg4dec.c b/libavcodec/msmpeg4dec.c index 2f908770e3..73f4be6747 100644 --- a/libavcodec/msmpeg4dec.c +++ b/libavcodec/msmpeg4dec.c @@ -140,7 +140,7 @@ static int msmpeg4v12_decode_mb(MpegEncContext *s, int16_t block[6][64]) if(s->msmpeg4_version==2) cbp= get_vlc2(&s->gb, v2_intra_cbpc_vlc.table, V2_INTRA_CBPC_VLC_BITS, 1); else - cbp= get_vlc2(&s->gb, ff_h263_intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 1); + cbp= get_vlc2(&s->gb, ff_h263_intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 2); if(cbp<0 || cbp>3){ av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y); return -1; |