From: Michael Niedermayer Date: Tue, 23 May 2017 01:24:49 +0000 (+0200) Subject: avcodec/ffv1dec_template: Fix runtime error: signed integer overflow: 202 + 214748361... X-Git-Tag: n3.4~1425 X-Git-Url: http://git.videolan.org/?p=ffmpeg.git;a=commitdiff_plain;h=9726e9f80934202e761870e95d40e8c591208459 avcodec/ffv1dec_template: Fix runtime error: signed integer overflow: 202 + 2147483615 cannot be represented in type 'int' Fixes: 1748/clusterfuzz-testcase-minimized-6690208340770816 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- diff --git a/libavcodec/ffv1dec_template.c b/libavcodec/ffv1dec_template.c index 21af155bba..36cfba9560 100644 --- a/libavcodec/ffv1dec_template.c +++ b/libavcodec/ffv1dec_template.c @@ -98,7 +98,7 @@ static av_always_inline void RENAME(decode_line)(FFV1Context *s, int w, if (sign) diff = -diff; - sample[1][x] = av_mod_uintp2(RENAME(predict)(sample[1] + x, sample[0] + x) + diff, bits); + sample[1][x] = av_mod_uintp2(RENAME(predict)(sample[1] + x, sample[0] + x) + (SUINT)diff, bits); } s->run_index = run_index; }