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avcodec/utils: Fix block align overflow for ADPCM_IMA_WAV

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Fixes: signed integer overflow: 529008646 * 8 cannot be represented in type 'int'
Fixes: 383379145/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-6674045107503104

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-12-11 22:37:07 +01:00
parent 361d24e6d9
commit 9327093079
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1 changed files with 1 additions and 1 deletions
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libavcodec/utils.c
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@ -729,7 +729,7 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
case AV_CODEC_ID_ADPCM_IMA_WAV:
if (bps < 2 || bps > 5)
return 0;
tmp = blocks * (1LL + (ba - 4 * ch) / (bps * ch) * 8);
tmp = blocks * (1LL + (ba - 4 * ch) / (bps * ch) * 8LL);
break;
case AV_CODEC_ID_ADPCM_IMA_DK3:
tmp = blocks * (((ba - 16LL) * 2 / 3 * 4) / ch);