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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-07-22 00:41:06 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-02 21:13:41 +0200 |
| commit | b4bf7226aff28e9ca379c5a3dedf745a2d316739 (patch) | |
| tree | 5a747561ab522f69b347617620669f8584e79e1f | |
| parent | 11f99a9a45925e14409eff65606973676d7376b6 (diff) | |
| download | ffmpeg-b4bf7226aff28e9ca379c5a3dedf745a2d316739.tar.gz | |
avcodec/vp3: Check that theora is theora
Theora is forced to be non zero if it is zero and a sample
is asked for, as suggested by reimar
Fixes: Timeout (2min -> 600ms)
Fixes: 15366/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_THEORA_fuzzer-5737849938247680
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/vp3.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index a6f759ebf5..6ce901eda9 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -2957,6 +2957,10 @@ static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb) s->theora_header = 0; s->theora = get_bits_long(gb, 24); av_log(avctx, AV_LOG_DEBUG, "Theora bitstream version %X\n", s->theora); + if (!s->theora) { + s->theora = 1; + avpriv_request_sample(s->avctx, "theora 0"); + } /* 3.2.0 aka alpha3 has the same frame orientation as original vp3 * but previous versions have the image flipped relative to vp3 */ |