[FFmpeg-cvslog] avcodec/truemotion2: Fix integer overflows in tm2_high_chroma()

[Michael Niedermayer]

ffmpeg | branch: release/2.8 | Michael Niedermayer <michael at niedermayer.cc> | Sat Sep 30 18:54:06 2017 +0200| [39291059134ab29e3d156843a846c8bba55a8ed0] | committer: Michael Niedermayer

avcodec/truemotion2: Fix integer overflows in tm2_high_chroma()

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 at niedermayer.cc>
(cherry picked from commit 44874b4f5ec2c605c70393573b9d85540ebc2d81)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=39291059134ab29e3d156843a846c8bba55a8ed0
---

 libavcodec/truemotion2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c
index 8691d6d302..3f98c860b5 100644
--- a/libavcodec/truemotion2.c
+++ b/libavcodec/truemotion2.c
@@ -457,7 +457,7 @@ 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++) {