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avcodec/svq3: Fix runtime error: signed integer overflow: 169 * 12717677 cannot be represented in type 'int'

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Fixes: 1556/clusterfuzz-testcase-minimized-5027865978470400

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 86b1b0d33d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2017-05-13 23:16:44 +02:00
parent 6f8dab7a7b
commit 3ed0d94b82
1 changed files with 1 additions and 1 deletions
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2
libavcodec/svq3.c
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@ -263,7 +263,7 @@ static void svq3_add_idct_c(uint8_t *dst, int16_t *block,
int i;
if (dc) {
dc = 13 * 13 * (dc == 1 ? 1538 * block[0]
dc = 13 * 13 * (dc == 1 ? 1538U* block[0]
: qmul * (block[0] >> 3) / 2);
block[0] = 0;
}