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avcodec/truemotion2: Fix integer overflow in last loop in tm2_update_block()

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Fixes: signed integer overflow: -1727985666 - 538976288 cannot be represented in type 'int'
Fixes: 15031/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-5100228035739648

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3aecd0170413c7e56f19de4e34d093a2c4027c2a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-06-13 19:45:50 +02:00
parent 8ba9b195e7
commit ef73b0da2d
1 changed files with 1 additions and 1 deletions
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libavcodec/truemotion2.c
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@ -672,7 +672,7 @@ static inline void tm2_still_block(TM2Context *ctx, AVFrame *pic, int bx, int by
static inline void tm2_update_block(TM2Context *ctx, AVFrame *pic, int bx, int by)
{
int i, j;
int d;
unsigned d;
TM2_INIT_POINTERS_2();
/* update chroma */