From 6726328f7940a76c43b4d97ac37ababf363d042f Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 31 May 2017 22:02:07 +0200 Subject: [PATCH] avcodec/hevc_ps: Fix runtime error: signed integer overflow: 2147483628 + 256 cannot be represented in type 'int' 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 --- libavcodec/hevc_ps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/hevc_ps.c b/libavcodec/hevc_ps.c index 1808b0b420..656d969ce2 100644 --- a/libavcodec/hevc_ps.c +++ b/libavcodec/hevc_ps.c @@ -751,7 +751,7 @@ 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; } }