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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-30 00:46:26 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-31 14:37:07 +0100 |
| commit | 869fe41d1088c4badcd98ee1ca2490451a07b173 (patch) | |
| tree | ad009495a90ef76330ad2b0eb7516e1b335cc595 | |
| parent | d7594ee751e621f6c7ef4d4977c4a3ce169ae0af (diff) | |
| download | ffmpeg-869fe41d1088c4badcd98ee1ca2490451a07b173.tar.gz | |
avcodec/vp3: Check input amount in theora_decode_header()
Fixes: Timeout
Fixes: 29226/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_THEORA_fuzzer-6195092572471296
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/vp3.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 2a1da6b062..57c6eb1ff9 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -2875,6 +2875,9 @@ static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb) int ret; AVRational fps, aspect; + if (get_bits_left(gb) < 206) + return AVERROR_INVALIDDATA; + s->theora_header = 0; s->theora = get_bits(gb, 24); av_log(avctx, AV_LOG_DEBUG, "Theora bitstream version %X\n", s->theora); |