Security update for Xen (important)

The Xen hypervisor and toolset has been updated to 4.2.2_06
to fix various bugs and security issues:

The following security issues have been addressed:

• CVE-2013-2194: Various integer overflows in the ELF
  loader were fixed. (XSA-55)
• CVE-2013-2195: Various pointer dereferences issues in
  the ELF loader were fixed. (XSA-55)
• CVE-2013-2196: Various other problems in the ELF
  loader were fixed. (XSA-55)
• CVE-2013-2078: A Hypervisor crash due to missing
  exception recovery on XSETBV was fixed. (XSA-54)
• CVE-2013-2077: A Hypervisor crash due to missing
  exception recovery on XRSTOR was fixed. (XSA-53)
• CVE-2013-2211: libxl allowed guest write access to
  sensitive console related xenstore keys. (XSA-57)
• CVE-2013-2076: An information leak on XSAVE/XRSTOR
  capable AMD CPUs (XSA-52) was fixed, where parts of this
  state could leak to other VMs.

Also the following bugs have been fixed:

• performance issues in mirror lvm (bnc#801663)
• aacraid driver panics mapping INT A when booting
  kernel-xen (bnc#808085)
• Fully Virtualized Windows VM install failed on Ivy
  Bridge platforms with Xen kernel (bnc#808269)
• Did not boot with i915 graphics controller with VT-d
  enabled (bnc#817210)