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avcodec/wavarc: Avoid signed integer overflow in sample

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Fixes: signed integer overflow: -2147483648 + -25122315 cannot be represented in type 'int'
Fixes: 62285/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVARC_fuzzer-6199806972198912

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer 2024-03-26 03:10:14 +01:00
parent ebdcf98499
commit 6009dd07bd
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1 changed files with 1 additions and 1 deletions
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libavcodec/wavarc.c
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@ -374,7 +374,7 @@ static int decode_2slp(AVCodecContext *avctx,
for (int o = 0; o < order; o++)
sum += s->filter[ch][o] * (unsigned)samples[n + 70 - o - 1];
samples[n + 70] = get_srice(gb, k) + (sum >> 4);
samples[n + 70] = get_srice(gb, k) + (unsigned)(sum >> 4);
}
finished = 1;
break;