CVE-2013-6425 Information

Description

Integer underflow in the pixman_trapezoid_valid macro in pixman.h in Pixman before 0.32.0 as used in X.Org server and cairo allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value.

Reference

http://cgit.freedesktop.org/pixman/commit/?id=5e14da97f16e421d084a9e735be21b1025150f0c http://lists.freedesktop.org/archives/pixman/2013-November/003109.html http://lists.opensuse.org/opensuse-updates/2014-01/msg00001.html http://lists.opensuse.org/opensuse-updates/2014-01/msg00005.html http://lists.opensuse.org/opensuse-updates/2014-01/msg00008.html http://lists.opensuse.org/opensuse-updates/2014-01/msg00097.html http://rhn.redhat.com/errata/RHSA-2013-1869.html http://www.debian.org/security/2013/dsa-2823 http://www.openwall.com/lists/oss-security/2013/12/03/8 http://www.openwall.com/lists/oss-security/2013/12/04/8 http://www.ubuntu.com/usn/USN-2047-1 https://bugs.freedesktop.org/show_bug.cgi?id=67484 https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1197921