diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-15 23:26:18 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-16 01:43:37 +0200 |
| commit | d09ec6c27f853a47893a917992038d0b2c28359a (patch) | |
| tree | 4eed002a00f98ebd00ab292f93dcf3e0d404d24a | |
| parent | 31c1c0b46a7021802c3d1d18039fca30dba5a14e (diff) | |
| download | ffmpeg-d09ec6c27f853a47893a917992038d0b2c28359a.tar.gz | |
avcodec/jpeg2000: Fixes integer overflow in ff_jpeg2000_ceildivpow2()
Fixes: runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself
Fixes: 2231/clusterfuzz-testcase-minimized-4565181982048256
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 e3fadc57c5c170f31455abacbcbd67115d7321d7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/jpeg2000.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/jpeg2000.h b/libavcodec/jpeg2000.h index 873e4505ec..8a022ad918 100644 --- a/libavcodec/jpeg2000.h +++ b/libavcodec/jpeg2000.h @@ -215,7 +215,7 @@ typedef struct Jpeg2000Component { /* misc tools */ static inline int ff_jpeg2000_ceildivpow2(int a, int b) { - return -(((int64_t)(-a)) >> b); + return -((-(int64_t)a) >> b); } static inline int ff_jpeg2000_ceildiv(int a, int b) |