From 6ea428789371fa0601e9ebb5b7f2216d4e73e831 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 10 May 2017 18:51:58 +0200 Subject: [PATCH] avcodec/dss_sp: Fix runtime error: signed integer overflow: 2147481189 + 4096 cannot be represented in type 'int' Fixes: 1441/clusterfuzz-testcase-minimized-6223152357048320 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/dss_sp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/dss_sp.c b/libavcodec/dss_sp.c index 2100936e51..14025fcdde 100644 --- a/libavcodec/dss_sp.c +++ b/libavcodec/dss_sp.c @@ -529,7 +529,7 @@ static void dss_sp_shift_sq_sub(const int32_t *filter_buf, for (i = 14; i > 0; i--) error_buf[i] = error_buf[i - 1]; - tmp = (tmp + 4096) >> 13; + tmp = (int)(tmp + 4096U) >> 13; error_buf[1] = tmp;