SUSE has issued an update for xen. This fixes multiple vulnerabilities, which can be exploited by malicious, local users in a guest virtual machine to cause a DoS (Denial of Service) and potentially gain escalated privileges.

For more information:
SA51397

Solution
Apply updated packages via the zypper package manager.
Changelog
Further details available to Secunia VIM customers

Original Advisory
SUSE-SU-2012:1615-1:
http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00001.html

openSUSE-SU-2012:1685-1:
http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00018.html

openSUSE-SU-2012:1687-1:
http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00019.html

openSUSE-SU-2013:0133-1:
http://lists.opensuse.org/opensuse-updates/2013-01/msg00024.html

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers