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avcodec/sbrdsp_fixed: Fix integer overflow

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Fixes: signed integer overflow: 2147483598 + 64 cannot be represented in type 'int'
Fixes: 4337/clusterfuzz-testcase-minimized-6192658616680448

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-11-22 20:18:40 +01:00
parent 31de45d20b
commit 12a511f2c2
1 changed files with 1 additions and 1 deletions
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libavcodec/sbrdsp_fixed.c
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@ -133,7 +133,7 @@ static av_always_inline SoftFloat autocorr_calc(int64_t accu)
round = 1U << (nz-1); round = 1U << (nz-1);
mant = (int)((accu + round) >> nz); mant = (int)((accu + round) >> nz);
mant = (mant + 0x40)>>7; mant = (mant + 0x40LL)>>7;
mant *= 64; mant *= 64;
expo = nz + 15; expo = nz + 15;
return av_int2sf(mant, 30 - expo); return av_int2sf(mant, 30 - expo);