avcodec/dirac_dwt: Fix multiple overflows in 9/7 lifting
authorMichael Niedermayer <michael@niedermayer.cc>
Fri, 1 Sep 2017 17:56:11 +0000 (19:56 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Sun, 17 Sep 2017 13:57:27 +0000 (15:57 +0200)
commit5cc3add03695e6ebc6a924dee5fd12138e45bb45
tree5c3f7f590cda2886ad4aa4bfa4f5f2b06d82e55d
parent93a32c15a84936064afc89a3333ce5aea9e6c8c1
avcodec/dirac_dwt: Fix multiple overflows in 9/7 lifting

Fixes: runtime error: signed integer overflow: 1073901567 + 1073901567 cannot be represented in type 'int'
Fixes: 3124/clusterfuzz-testcase-minimized-454643435752652

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 f71cd44147e7a914f80fcfacca46c9e7b0374362)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/dirac_dwt.h