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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-11-17 00:38:53 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-11-24 22:12:10 +0100 |
| commit | 2ae39d795613f3c6925c59852b625029b747fe42 (patch) | |
| tree | a17c4fd4fc2e57f25475d540954bd570ac5cadb7 | |
| parent | 86e6f0dbc7fd31e4a071c9fc1fc94fb9e74e0624 (diff) | |
| download | ffmpeg-2ae39d795613f3c6925c59852b625029b747fe42.tar.gz | |
avcodec/truemotion2: fix integer overflows in tm2_low_chroma()
Fixes: 11295/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-4888953459572736
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/truemotion2.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c index 6d58483a77..4d27f0cbfc 100644 --- a/libavcodec/truemotion2.c +++ b/libavcodec/truemotion2.c @@ -493,7 +493,7 @@ static inline void tm2_high_chroma(int *data, int stride, int *last, unsigned *C } } -static inline void tm2_low_chroma(int *data, int stride, int *clast, int *CD, int *deltas, int bx) +static inline void tm2_low_chroma(int *data, int stride, int *clast, unsigned *CD, int *deltas, int bx) { int t; int l; @@ -503,8 +503,8 @@ static inline void tm2_low_chroma(int *data, int stride, int *clast, int *CD, in prev = clast[-3]; else prev = 0; - t = (CD[0] + CD[1]) >> 1; - l = (prev - CD[0] - CD[1] + clast[1]) >> 1; + t = (int)(CD[0] + CD[1]) >> 1; + l = (int)(prev - CD[0] - CD[1] + clast[1]) >> 1; CD[1] = CD[0] + CD[1] - t; CD[0] = t; clast[0] = l; |