From 12936a4585bc293c0f88327d6840f49e8e744b62 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 6 May 2017 16:38:22 +0200 Subject: [PATCH] avcodec/dfa: Fix signed integer overflow: -2147483648 - 1 cannot be represented in type 'int' Fixes: 1368/clusterfuzz-testcase-minimized-4507293276176384 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/dfa.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/dfa.c b/libavcodec/dfa.c index 5ddb647c4c..3ea12f0511 100644 --- a/libavcodec/dfa.c +++ b/libavcodec/dfa.c @@ -67,7 +67,8 @@ static int decode_tsw1(GetByteContext *gb, uint8_t *frame, int width, int height const uint8_t *frame_start = frame; const uint8_t *frame_end = frame + width * height; int mask = 0x10000, bitbuf = 0; - int v, count, segments; + int v, count; + unsigned segments; unsigned offset; segments = bytestream2_get_le32(gb);