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avcodec/apedec: Fix invalid shift with 24 bps

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Fixes: left shift of negative value -463
Fixes: 20542/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5688714435231744

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-02-11 23:56:45 +01:00
parent 47773f7979
commit 8e27867229
1 changed files with 1 additions and 1 deletions
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libavcodec/apedec.c
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@ -1555,7 +1555,7 @@ 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] << 8;
*sample24++ = s->decoded[ch][i] * 256;
}
break;
}