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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-06-13 16:03:14 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-06-14 22:02:34 +0200 |
| commit | 95b9ac040ef7ada89f6885c8e6c1a77c9018954e (patch) | |
| tree | 3294d95e84638c12ca24e67b7698329c5582cf30 | |
| parent | f8239323498c1695ec83174bc72239717e1d0c9d (diff) | |
| download | ffmpeg-95b9ac040ef7ada89f6885c8e6c1a77c9018954e.tar.gz | |
avcodec/mv30: check mode_size vs. input space
Fixes: Timeout (longer than my patience vs 1sec)
Fixes: 22984/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MV30_fuzzer-5630021988515840
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 75e2ac4f0752649a0b9486e6825ef68341ee974d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mv30.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/mv30.c b/libavcodec/mv30.c index 013a5753fe..76b9170eaf 100644 --- a/libavcodec/mv30.c +++ b/libavcodec/mv30.c @@ -410,6 +410,9 @@ static int decode_intra(AVCodecContext *avctx, GetBitContext *gb, AVFrame *frame int ret; mgb = *gb; + if (get_bits_left(gb) < s->mode_size * 8) + return AVERROR_INVALIDDATA; + skip_bits_long(gb, s->mode_size * 8); linesize[0] = frame->linesize[0]; |