X.org: libXpm vulnerability

Background

libXpm is a pixmap manipulation library for the X Window System, included in X.org.

Description

Chris Gilbert has discovered potentially exploitable buffer overflow cases in libXpm that weren’t fixed in previous libXpm versions.

Impact

A carefully-crafted XPM file could crash X.org, potentially allowing the execution of arbitrary code with the privileges of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All X.org users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose x11-base/xorg-x11