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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-20 04:10:50 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-31 23:47:15 +0100 |
| commit | 25f7121c7b98b3d188e4896d5bdd83ac7da903fe (patch) | |
| tree | 84196022a0a09474a6b47c017e68684cc8f2ce47 | |
| parent | b9948d52756a883afb1e7cebf9740f1094e1f3f3 (diff) | |
| download | ffmpeg-25f7121c7b98b3d188e4896d5bdd83ac7da903fe.tar.gz | |
avcodec/truemotion2: Fix integer overflow in TM2_RECALC_BLOCK()
Fixes: signed integer overflow: 1477974040 - -1877995504 cannot be represented in type 'int'
Fixes: 4861/clusterfuzz-testcase-minimized-4570316383715328
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 56a53340ed4cc55898e49c07081311ebb2816630)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/truemotion2.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c index 3f98c860b5..b77df57baa 100644 --- a/libavcodec/truemotion2.c +++ b/libavcodec/truemotion2.c @@ -433,8 +433,8 @@ static inline int GET_TOK(TM2Context *ctx,int type) /* recalculate last and delta values for next blocks */ #define TM2_RECALC_BLOCK(CHR, stride, last, CD) {\ - CD[0] = CHR[1] - last[1];\ - CD[1] = (int)CHR[stride + 1] - (int)CHR[1];\ + CD[0] = (unsigned)CHR[ 1] - (unsigned)last[1];\ + CD[1] = (unsigned)CHR[stride + 1] - (unsigned) CHR[1];\ last[0] = (int)CHR[stride + 0];\ last[1] = (int)CHR[stride + 1];} |