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authorKeith Packard <keithp@keithp.com>2015-05-01 13:09:24 +0200
committerMike Gabriel <mike.gabriel@das-netzwerkteam.de>2015-05-01 13:17:03 +0200
commitdba779d9f99ab2fc6bf05c78515dbdd82840cadd (patch)
treef962041d8bb5b2bc956ecb673dd434c60aebbb95 /nxcomp/RenderCompositeGlyphs.h
parent7ccbb073f83b7aa8d0f154b34693b1075e455bd8 (diff)
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dix: Allow zero-height PutImage requests (fix for X.Org's CVE-2015-3418).
The length checking code validates PutImage height and byte width by making sure that byte-width >= INT32_MAX / height. If height is zero, this generates a divide by zero exception. Allow zero height requests explicitly, bypassing the INT32_MAX check. Fix for regression introduced by fix for CVE-2014-8092. v2: backports to nx-libs 3.6.x (Mike Gabriel) Signed-off-by: Keith Packard <keithp@keithp.com>
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