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avcodec/wavarc: Avoid signed integer overflow in sample
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>
(cherry picked from commit 6009dd07bd
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
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@ -374,7 +374,7 @@ static int decode_2slp(AVCodecContext *avctx,
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for (int o = 0; o < order; o++)
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sum += s->filter[ch][o] * (unsigned)samples[n + 70 - o - 1];
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samples[n + 70] = get_srice(gb, k) + (sum >> 4);
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samples[n + 70] = get_srice(gb, k) + (unsigned)(sum >> 4);
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}
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finished = 1;
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break;
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