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avcodec/cavsdec: Fix runtime error: signed integer overflow: 31 + 2147483640 cannot be represented in type 'int' 

Fixes: 1506/clusterfuzz-testcase-minimized-5401272918212608

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-13 00:42:29 +02:00
parent cb243972b1
commit 5ac17f187a
1 changed files with 1 additions and 1 deletions
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2
libavcodec/cavsdec.c
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@ -684,7 +684,7 @@ static int decode_mb_i(AVSContext *h, int cbp_code)
}
h->cbp = cbp_tab[cbp_code][0];
if (h->cbp && !h->qp_fixed)
h->qp = (h->qp + get_se_golomb(gb)) & 63; //qp_delta
h->qp = (h->qp + (unsigned)get_se_golomb(gb)) & 63; //qp_delta
/* luma intra prediction interleaved with residual decode/transform/add */
for (block = 0; block < 4; block++) {