Security update for Xen (important)

XEN received various security and bugfixes:

• CVE-2012-4535: xen: Timer overflow DoS vulnerability
  (XSA-20)
• CVE-2012-4537: xen: Memory mapping failure DoS
  vulnerability (XSA-22)

The following additional bugs have beenfixed:

• bnc#784087 - L3: Xen BUG at io_apic.c:129
  26102-x86-IOAPIC-legacy-not-first.patch
• Upstream patches from Jan
  25927-x86-domctl-ioport-mapping-range.patch
  25931-x86-domctl-iomem-mapping-checks.patch
  26061-x86-oprof-counter-range.patch
  25431-x86-EDD-MBR-sig-check.patch
  25480-x86_64-sysret-canonical.patch
  25481-x86_64-AMD-erratum-121.patch
  25485-x86_64-canonical-checks.patch
  25587-param-parse-limit.patch
  25589-pygrub-size-limits.patch
  25744-hypercall-return-long.patch
  25765-x86_64-allow-unsafe-adjust.patch
  25773-x86-honor-no-real-mode.patch
  25786-x86-prefer-multiboot-meminfo-over-e801.patch
  25808-domain_create-return-value.patch
  25814-x86_64-set-debugreg-guest.patch
  24742-gnttab-misc.patch 25098-x86-emul-lock-UD.patch
  25200-x86_64-trap-bounce-flags.patch
  25271-x86_64-IST-index.patch

bnc#651093 - win2k8 guests are unable to restore
after saving the vms state ept-novell-x64.patch
23800-x86_64-guest-addr-range.patch
24168-x86-vioapic-clear-remote_irr.patch
24453-x86-vIRQ-IRR-TMR-race.patch 24456-x86-emul-lea.patch

bnc#713555 - Unable to install RHEL 6.1 x86 as a
paravirtualized guest OS on SLES 10 SP4 x86
vm-install-0.2.19.tar.bz2