avcodec/pngdec: Check bits per pixel before setting monoblack pixel format
authorMichael Niedermayer <michaelni@gmx.at>
Fri, 3 Oct 2014 15:35:58 +0000 (17:35 +0200)
committerMichael Niedermayer <michaelni@gmx.at>
Fri, 3 Oct 2014 15:37:15 +0000 (17:37 +0200)
commit3e2b745020c2dbf0201fe7df3dad9e7e0b2e1bb6
treea6731d13a52e24781f3870332a9a510e4e74f28e
parente1c0cfaa419aa5d320540d5a1b3f8fd9b82ab7e5
avcodec/pngdec: Check bits per pixel before setting monoblack pixel format

Fixes out of array accesses
Fixes: asan_heap-oob_14dbfcf_4_asan_heap-oob_1ce5767_179_add_method_small.png

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavcodec/pngdec.c