Security update for kvm (important)

This update for KVM fixes an issue in the virtio-blk driver which could
result in incorrectly setting its WCE configuration. Under some
circumstances, this misconfiguration could cause severe file system
corruption, because cache flushes were not generated as they ought to have
been.

The update also addresses one security vulnerability:

   * CVE-2015-1779: Insufficient resource limiting in VNC websockets
     decoder. (bsc#924018)

Security Issues:

   * CVE-2015-1779
     &lt;<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1779">http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1779</a>&gt;