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author | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-20 04:10:50 +0100 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-28 15:33:09 +0100 |
commit | 6ed5e44998ed59d8525661c8d6443e371b13c62d (patch) | |
tree | 8dfa350304379818505a583b5490805bad5b6216 | |
parent | aed915b8a62cd7be2a8eb5261cc29df824f8d874 (diff) | |
download | ffmpeg-6ed5e44998ed59d8525661c8d6443e371b13c62d.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 f077f0e4bd..97c38f7f08 100644 --- a/libavcodec/truemotion2.c +++ b/libavcodec/truemotion2.c @@ -441,8 +441,8 @@ 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];} |