libxml2: Denial of service

Background

libxml2 is the XML C parser and toolkit developed for the Gnome project.

Description

libxml2 returns the empty string when the allocation limit is encountered while constructing the attribute value string.

Impact

A remote attacker may be able to cause Denial of Service via a specially crafted XML file.

Workaround

There is no known workaround at this time.

Resolution

All libxml2 users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.9.2-r1"