avcodec/truemotion2: Fix integer overflows in tm2_high_chroma()
authorMichael Niedermayer <michael@niedermayer.cc>
Sat, 30 Sep 2017 16:54:06 +0000 (18:54 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Wed, 4 Oct 2017 23:30:03 +0000 (01:30 +0200)
Fixes: runtime error: signed integer overflow: -1408475220 + -1408475220 cannot be represented in type 'int'
Fixes: 3336/clusterfuzz-testcase-minimized-5656839179993088

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 44874b4f5ec2c605c70393573b9d85540ebc2d81)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/truemotion2.c

index a463a92..f077f0e 100644 (file)
@@ -465,7 +465,7 @@ static inline void tm2_apply_deltas(TM2Context *ctx, int* Y, int stride, int *de
     }
 }
 
-static inline void tm2_high_chroma(int *data, int stride, int *last, int *CD, int *deltas)
+static inline void tm2_high_chroma(int *data, int stride, int *last, unsigned *CD, int *deltas)
 {
     int i, j;
     for (j = 0; j < 2; j++) {