From fe1e6c06d03432c3e9208f019533c1d701f485d0 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 25 Jan 2018 23:14:37 +0100 Subject: avcodec/dirac_dwt: Fix several integer overflows Fixes: runtime error: signed integer overflow: -2146071175 + -268479557 cannot be represented in type 'int' Fixes: 5237/clusterfuzz-testcase-minimized-4569895275593728 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/dirac_dwt_template.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavcodec/dirac_dwt_template.c') diff --git a/libavcodec/dirac_dwt_template.c b/libavcodec/dirac_dwt_template.c index e436c247a1..e68cc4d530 100644 --- a/libavcodec/dirac_dwt_template.c +++ b/libavcodec/dirac_dwt_template.c @@ -49,7 +49,7 @@ static void RENAME(vertical_compose53iL0)(uint8_t *_b0, uint8_t *_b1, uint8_t *_ TYPE *b1 = (TYPE *)_b1; TYPE *b2 = (TYPE *)_b2; for (i = 0; i < width; i++) - b1[i] -= (int)(b0[i] + (unsigned)b2[i] + 2) >> 2; + b1[i] -= (unsigned)((int)(b0[i] + (unsigned)b2[i] + 2) >> 2); } static av_always_inline void RENAME(interleave)(TYPE *dst, TYPE *src0, TYPE *src1, int w2, -- cgit v1.2.3