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avcodec/wavpack: Fix integer overflow in wv_unpack_stereo()

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Fixes: runtime error: signed integer overflow: 2080374785 + 2080374784 cannot be represented in type 'int'
Fixes: 2351/clusterfuzz-testcase-minimized-5359403240783872

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 73ea2a028e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-06-25 00:13:53 +02:00
parent 8b9e522e08
commit 0fe174fa9c
1 changed files with 1 additions and 1 deletions
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2
libavcodec/wavpack.c
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@ -474,7 +474,7 @@ static inline int wv_unpack_stereo(WavpackFrameContext *s, GetBitContext *gb,
}
if (type == AV_SAMPLE_FMT_S16P) {
if (FFABS(L) + FFABS(R) > (1<<19)) {
if (FFABS(L) + (unsigned)FFABS(R) > (1<<19)) {
av_log(s->avctx, AV_LOG_ERROR, "sample %d %d too large\n", L, R);
return AVERROR_INVALIDDATA;
}