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avcodec/apedec: Fix undefined integer overflow with 24bit

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Fixes: signed integer overflow: 8683744 * 256 cannot be represented in type 'int'
Fixes: 23527/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5679885932822528

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 9f7b252cdf)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-06-30 22:01:22 +02:00
parent a9fba357e5
commit efe225d307
1 changed files with 1 additions and 1 deletions
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libavcodec/apedec.c
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@ -1535,7 +1535,7 @@ static int ape_decode_frame(AVCodecContext *avctx, void *data,
for (ch = 0; ch < s->channels; ch++) {
sample24 = (int32_t *)frame->data[ch];
for (i = 0; i < blockstodecode; i++)
*sample24++ = s->decoded[ch][i] * 256;
*sample24++ = s->decoded[ch][i] * 256U;
}
break;
}