Security update for Xen (important)

Xen was updated to fix several security issues:

CVE-2012-3433: A xen HVM guest destroy p2m teardown
host DoS vulnerability was fixed, where malicious guest
could lock/crash the host.

CVE-2012-3432: A xen HVM guest user mode MMIO
emulation DoS was fixed.

CVE-2012-2625: The xen pv bootloader doesn’t check
the size of the bzip2 or lzma compressed kernel, leading to
denial of service (crash).

Also the following bug in XEN was fixed:

• bnc#746702 - Xen HVM DomU crash during Windows Server
  2008 R2 install, when maxmem > memory

This update also included bugfixes for:

• vm-install: - bnc#762963 - ReaR: Unable to recover a
  paravirtualized XEN guest