png: check bit depth for PAL8/Y400A pixel formats.
authorRonald S. Bultje <rsbultje@gmail.com>
Wed, 2 May 2012 17:58:55 +0000 (10:58 -0700)
committerReinhard Tartler <siretart@tauware.de>
Sun, 3 Jun 2012 17:16:37 +0000 (19:16 +0200)
commit269dbc53599e588efc6027df634a9d5b9476c3fc
tree89abcaf863b775a43397be5d2a6d8e1f84b4ba90
parent850298ef2538f02cd4671a4cc5035026b35c7bf5
png: check bit depth for PAL8/Y400A pixel formats.

Wrong bit depth can lead to invalid rowsize values, which crashes the
decoder further down.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
(cherry picked from commit d2205d6543881f2e6fa18c8a354bbcf91a1235f7)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
(cherry picked from commit b8d6ba9d50e80fdce2ed74cdaffd4960df8a21c5)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
libavcodec/pngdec.c