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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-04-13 00:15:27 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-04-19 21:06:09 +0200 |
| commit | bcf9d2a17242b78dc4cd56731893c9a5781ecad2 (patch) | |
| tree | c6419f0f87d849c00a3075094ee28803a1431a97 /libavcodec | |
| parent | 110dce96331529a13cc815d3c852aed9d37f83d0 (diff) | |
| download | ffmpeg-bcf9d2a17242b78dc4cd56731893c9a5781ecad2.tar.gz | |
avcodec/wmv2dec: Check that the P frame secondary header fit in the input
Fixes: Timeout (64sec ->2 sec)
Fixes: 14131/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMV2_fuzzer-5719879556005888
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/wmv2dec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/wmv2dec.c b/libavcodec/wmv2dec.c index 92daa1639e..124dfdb7e0 100644 --- a/libavcodec/wmv2dec.c +++ b/libavcodec/wmv2dec.c @@ -230,6 +230,9 @@ int ff_wmv2_decode_secondary_picture_header(MpegEncContext *s) s->rl_chroma_table_index = s->rl_table_index; } + if (get_bits_left(&s->gb) < 2) + return AVERROR_INVALIDDATA; + s->dc_table_index = get_bits1(&s->gb); s->mv_table_index = get_bits1(&s->gb); |