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 19:35:16 +0000 (21:35 +0200)
commite17b1536a1d019d62ffa627948a36881a5b7ce1e
tree6f5c5ef39317378d28e43aec6e5e614bef91933c
parent97ed486fffc817317561a91bc6ecd71a8eb493c6
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>
(cherry picked from commit 33f93005f1a86c108302b4c5978aa1a3d8e092cc)

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