avcodec/cabac: Check initial cabac decoder state
authorMichael Niedermayer <michael@niedermayer.cc>
Fri, 27 Nov 2015 12:37:50 +0000 (13:37 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Fri, 27 Nov 2015 12:52:47 +0000 (13:52 +0100)
commit8000d484b83aafa752d84fbdbfb352ffe0dc64f8
treea7872c85e8a811fc9abe6997765e20b8bcf8b511
parenta1f6b05f5228979dab0e149deca7a30d22e98af5
avcodec/cabac: Check initial cabac decoder state

Fixes integer overflows
Fixes: 1430e9c43fae47a24c179c7c54f94918/signal_sigsegv_421427_2340_591e9810c7b09efe501ad84638c9e9f8.264

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Found-by: xiedingbao (Ticket4727)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/cabac.c
libavcodec/cabac.h
libavcodec/cabac_functions.h
libavcodec/h264_cabac.c
libavcodec/h264_slice.c