Security update for Xen (important)

Xen was updated to fix the following security issues:

   * CVE-2015-5154: Host code execution via IDE subsystem CD-ROM.
     (bsc#938344)
   * CVE-2015-3209: Heap overflow in QEMU's pcnet controller allowing
     guest to host escape. (bsc#932770)
   * CVE-2015-4164: DoS through iret hypercall handler. (bsc#932996)
   * CVE-2015-5165: QEMU leak of uninitialized heap memory in rtl8139
     device model. (XSA-140, bsc#939712)

Security Issues:

   * CVE-2015-5154
     &lt;<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5154">http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5154</a>&gt;
   * CVE-2015-3209
     &lt;<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3209">http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3209</a>&gt;
   * CVE-2015-4164
     &lt;<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4164">http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4164</a>&gt;
   * CVE-2015-5165
     &lt;<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5165">http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5165</a>&gt;