libvirt: Unintended access to /dev/mapper/control

Background

libvirt is a C toolkit for manipulating virtual machines.

Description

A file descriptor for /dev/mapper/control was insufficiently protected.

Impact

A local attacker may be able to escalate to root privileges.

Workaround

There is no known workaround at this time.

Resolution

All libvirt users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-emulation/libvirt-6.7.0"