(RHSA-2013:0687) Moderate: pixman security update

Pixman is a pixel manipulation library for the X Window System and Cairo.

An integer overflow flaw was discovered in one of pixman’s manipulation
routines. If a remote attacker could trick an application using pixman into
performing a certain manipulation, it could cause the application to crash
or, possibly, execute arbitrary code with the privileges of the user
running the application. (CVE-2013-1591)

Users are advised to upgrade to these updated packages, which contain
a backported patch to correct this issue. All applications using
pixman must be restarted for this update to take effect.