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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-15 22:09:10 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-20 15:33:13 +0200 |
| commit | 4ebe40ef6418995a888094f680eb2313850618d4 (patch) | |
| tree | 9970b4411937912555d83d5c70e164ffff4e38e4 /libavcodec/adpcm.c | |
| parent | a4895b75a3030d624fd15793e830543b94a0f29c (diff) | |
| download | ffmpeg-4ebe40ef6418995a888094f680eb2313850618d4.tar.gz | |
avcodec/adpcm: Check channels before use for ADPCM_PSX
Fixes: division by zero
Fixes: 26293/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_PSX_fuzzer-5176665237618688
Fixes: 26331/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_PSX_fuzzer-5632330364092416
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/adpcm.c')
| -rw-r--r-- | libavcodec/adpcm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index f7da3dcf89..d018c1f91b 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -135,7 +135,7 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx) break; case AV_CODEC_ID_ADPCM_PSX: max_channels = 8; - if (avctx->block_align % (16 * avctx->channels)) + if (avctx->channels <= 0 || avctx->block_align % (16 * avctx->channels)) return AVERROR_INVALIDDATA; break; case AV_CODEC_ID_ADPCM_IMA_DAT4: |