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avcodec/hevc_ps: Fix runtime error: signed integer overflow: 2147483628 + 256 cannot be represented in type 'int'

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Fixes: 1909/clusterfuzz-testcase-minimized-6732072662073344

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 6726328f79)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-31 22:02:07 +02:00
parent 368aa6aac7
commit 041ad6d2bb
1 changed files with 1 additions and 1 deletions
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libavcodec/hevc_ps.c
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@ -720,7 +720,7 @@ static int scaling_list_data(GetBitContext *gb, AVCodecContext *avctx, ScalingLi
ff_hevc_diag_scan8x8_x[i];
scaling_list_delta_coef = get_se_golomb(gb);
next_coef = (next_coef + scaling_list_delta_coef + 256) % 256;
next_coef = (next_coef + 256U + scaling_list_delta_coef) % 256;
sl->sl[size_id][matrix_id][pos] = next_coef;
}
}