From 2a0823ae966be3ad40e5dba6ec4c4dc1e8c6bcad Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 1 Sep 2017 19:56:10 +0200 Subject: [PATCH] avcodec/diracdec: Fix integer overflow in INTRA_DC_PRED() 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 --- libavcodec/diracdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index 0aee08f9e1..f2aed6057d 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -586,7 +586,7 @@ 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 ->