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avcodec/diracdec: Fix integer overflow in INTRA_DC_PRED()

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Fixes: runtime error: signed integer overflow: 1168175789 + 1168178473 cannot be represented in type 'int'
Fixes: 3081/clusterfuzz-testcase-minimized-4807564879462400
Fixes: 2844/clusterfuzz-testcase-minimized-5561715838156800

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 2a0823ae966be3ad40e5dba6ec4c4dc1e8c6bcad)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-09-01 19:56:10 +02:00
parent b2aa633d66
commit 92f4341ed1
1 changed files with 1 additions and 1 deletions
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2
libavcodec/diracdec.c
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@ -594,7 +594,7 @@ static inline void codeblock(DiracContext *s, SubBand *b,
} \
INTRA_DC_PRED(8, int16_t)
INTRA_DC_PRED(10, int32_t)
INTRA_DC_PRED(10, uint32_t)
/**
* Dirac Specification ->