From 1223696c725a8ea7e80498e6ccfab37eea179b76 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 16 Mar 2019 02:30:57 +0100 Subject: avcodec/truemotion2: Fix integer overflow in tm2_null_res_block() Fixes: signed integer overflow: 1111638592 - -2122219136 cannot be represented in type 'int' Fixes: 13441/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-5732769815068672 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/truemotion2.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'libavcodec') diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c index 4d27f0cbfc..18719dae1c 100644 --- a/libavcodec/truemotion2.c +++ b/libavcodec/truemotion2.c @@ -600,7 +600,8 @@ static inline void tm2_null_res_block(TM2Context *ctx, AVFrame *pic, int bx, int { int i; int ct; - int left, right, diff; + unsigned left, right; + int diff; int deltas[16]; TM2_INIT_POINTERS(); -- cgit v1.2.3