avcodec/jpeg2000: Check stepsize before using it
authorMichael Niedermayer <michael@niedermayer.cc>
Mon, 15 Apr 2019 22:41:54 +0000 (00:41 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Thu, 9 May 2019 09:23:13 +0000 (11:23 +0200)
commit485546eec10a13cbacd17901f02794952d621f20
tree44953cd714e4f54dc3c3f15b728d4044c6e2cef9
parent3adb15617d5db5fb9b57c64ea0c6a91c57587a0a
avcodec/jpeg2000: Check stepsize before using it

Fixes: value 1.87633e+10 is outside the range of representable values of type 'int'
Fixes: Undefined behavior
Fixes: 14246/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-5758393601490944

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 06ef186fa1b7329c6fe6723372a72464c998059b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/jpeg2000.c