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avcodec/pixlet: Fixes: runtime error: signed integer overflow: 9203954323419769657 + 29897660706736950 cannot be represented in type 'long'

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Fixes: 1569/clusterfuzz-testcase-minimized-6328690508038144

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 a453f5549a8c3f8307200b32d3b342f0b4af3153)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-14 17:02:49 +02:00
parent 340690e8e6
commit 611ef6381b
1 changed files with 1 additions and 1 deletions
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libavcodec/pixlet.c
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@ -256,7 +256,7 @@ static int read_high_coeffs(AVCodecContext *avctx, uint8_t *src, int16_t *dst, i
j = 0; j = 0;
dst += stride; dst += stride;
} }
state += (int64_t)d * yflag - ((int64_t)(d * (uint64_t)state) >> 8); state += (int64_t)d * (uint64_t)yflag - ((int64_t)(d * (uint64_t)state) >> 8);
flag = 0; flag = 0;