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avcodec/wavpack: Fix runtime error: signed integer overflow: 24 * -2147483648 cannot be represented in type 'int'

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Fixes: 1894/clusterfuzz-testcase-minimized-4716739789062144

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 d90c5bf10559554d6f9cd1dfb90767b991b76d5d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-30 03:09:11 +02:00
parent c1074aea71
commit a24cd04074
1 changed files with 1 additions and 1 deletions
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2
libavcodec/wavpack.c
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@ -554,7 +554,7 @@ static inline int wv_unpack_mono(WavpackFrameContext *s, GetBitContext *gb,
if (type != AV_SAMPLE_FMT_S16P)
S = T + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
else
S = T + ((s->decorr[i].weightA * A + 512) >> 10);
S = T + ((int)(s->decorr[i].weightA * (unsigned)A + 512) >> 10);
if (A && T)
s->decorr[i].weightA -= ((((T ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
s->decorr[i].samplesA[j] = T = S;