CVE ID:	CVE-2013-6424
Description:	Integer underflow in the xTrapezoidValid macro in render/picture.h in X.Org allows context-dependent attackers to cause a denial of service (crash) via a negative bottom value.
Test IDs:	1.3.6.1.4.1.25623.1.1.4.2014.0744.1   1.3.6.1.4.1.25623.1.0.702822   1.3.6.1.4.1.25623.1.0.123489   1.3.6.1.4.1.25623.1.1.10.2014.0016   1.3.6.1.4.1.25623.1.1.4.2014.0051.1   1.3.6.1.4.1.25623.1.1.4.2014.0051.2   1.3.6.1.4.1.25623.1.0.881854   1.3.6.1.4.1.25623.1.0.881856   1.3.6.1.4.1.25623.1.0.871104   1.3.6.1.4.1.25623.1.0.120569
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2013-6424 DSA-2822 http://www.debian.org/security/2013/dsa-2822 GLSA-201701-64 https://security.gentoo.org/glsa/201701-64 GLSA-201710-30 https://security.gentoo.org/glsa/201710-30 RHSA-2013:1868 http://rhn.redhat.com/errata/RHSA-2013-1868.html USN-2500-1 http://www.ubuntu.com/usn/USN-2500-1 [oss-security] 20131203 CVE Request: xorg-server and pixman http://www.openwall.com/lists/oss-security/2013/12/03/8 [oss-security] 20131204 Re: CVE Request: xorg-server and pixman http://www.openwall.com/lists/oss-security/2013/12/04/8 [xorg-devel] 20131002 [PATCH] exa: only draw valid trapezoids http://lists.x.org/archives/xorg-devel/2013-October/037996.html https://bugs.freedesktop.org/show_bug.cgi?id=67484 https://bugs.freedesktop.org/show_bug.cgi?id=67484 https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1197921 https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1197921 openSUSE-SU-2013:1965 http://lists.opensuse.org/opensuse-updates/2013-12/msg00127.html