CVE-2013-6424

NameCVE-2013-6424
DescriptionInteger 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-2822-1
NVD severitymedium (attack range: remote)
Debian Bugs742922

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xorg-server (PTS)wheezy (security), wheezy2:1.12.4-6+deb7u6fixed
jessie2:1.16.4-1fixed
stretch2:1.18.4-2fixed
sid2:1.19.0-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xorg-serversource(unstable)2:1.14.2.901-1low742922
xorg-serversourcesqueeze2:1.7.7-18mediumDSA-2822-1
xorg-serversourcewheezy2:1.12.4-6+deb7u2mediumDSA-2822-1

Notes

Band-aid fix in Wheezy not applicable to upstream code, fixed post-Wheezy
in pixman: http://cgit.freedesktop.org/pixman/commit/?id=5e14da97f16e421d084a9e735be21b1025150f0c
Mark the first post-wheezy xorg-server as a pseudo fixed version

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