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avcodec/vorbisdec: Check remaining data in vorbis_residue_decode_internal() 

Fixes: timeout
Fixes: 66326/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VORBIS_fuzzer-6295291863040000

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 dc89cf804a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-02-27 22:27:03 +01:00
parent edad5b7064
commit c7122a760e
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1 changed files with 3 additions and 0 deletions
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libavcodec/vorbisdec.c
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@ -1451,6 +1451,9 @@ static av_always_inline int vorbis_residue_decode_internal(vorbis_context *vc,
unsigned step = FASTDIV(vr->partition_size << 1, dim << 1);
vorbis_codebook codebook = vc->codebooks[vqbook];
if (get_bits_left(gb) <= 0)
return AVERROR_INVALIDDATA;
if (vr_type == 0) {
voffs = voffset+j*vlen;