Xen was updated to fix various bugs and security issues:

Update to Xen version 4.2.4 c/s 26280.

- bnc#861256 - CVE-2014-1950: xen: XSA-88: use-after-free in xc_cpupool_getinfo()
under memory pressure. (fix included with update)

- bnc#863297: xend/pvscsi: recognize also SCSI CDROM devices

- bnc#858496 - CVE-2014-1642: Xen: XSA-83: Out-of-memory condition yielding memory
corruption during IRQ setup

- bnc#860163 - xen: XSA-84: integer overflow in several
XSM/Flask hypercalls (CVE-2014-1891 CVE-2014-1892 CVE-2014-1893 CVE-2014-1894)

- bnc#860165 - CVE-2014-1895: xen: XSA-85: Off-by-one error in
FLASK_AVC_CACHESTAT hypercall

- bnc#860300 - CVE-2014-1896: xen: XSA-86: libvchan failure handling
malicious ring indexes

- bnc#860302 - CVE-2014-1666: xen: XSA-87:
PHYSDEVOP_{prepare,release}_msix exposed to unprivileged guests

- bnc#858311 - Server is not booting in kernel XEN after latest
updates - (XEN) setup 0000:00:18.0 for d0 failed (-19)

- bnc#858496 - CVE-2014-1642: Xen: XSA-83: Out-of-memory condition yielding memory
corruption during IRQ setup

- bnc#853049 - CVE-2013-6885: xen: XSA-82: Guest triggerable
AMD CPU erratum may cause host hang

- bnc#853048 - CVE-2013-6400: xen: XSA-80: IOMMU TLB
flushing may be inadvertently suppressed

- bnc#831120 - CVE-2013-2212: xen: XSA-60: Excessive time to
disable caching with HVM guests with PCI passthrough

- bnc#848014 - [HP HPS] Xen hypervisor panics on 8-blades nPar with
46-bit memory addressing

- bnc#833251 - [HP BCS SLES11 Bug]: In HPs UEFI x86_64 platform
and with xen environment, in booting stage ,xen hypervisor will
panic.

- pygrub: Support (/dev/xvda) style disk specifications

- bnc#849667 - CVE-2014-1895: xen: XSA-74: Lock order reversal between
page_alloc_lock and mm_rwlock

- bnc#849668 - CVE-2013-4554: xen: XSA-76: Hypercalls exposed to privilege
rings 1 and 2 of HVM guests

- bnc#842417 - In HPs UEFI x86_64 platform and sles11sp3 with xen
environment, dom0 will soft lockup on multiple blades nPar.
- bnc#848014 - [HP HPS] Xen hypervisor panics on 8-blades nPar with
46-bit memory addressing
- bnc#846849 - Soft lockup with PCI passthrough and many VCPUs
- bnc#833483 - Boot Failure with xen kernel in UEFI mode with error
"No memory for trampoline"

- bnc#849665 - CVE-2013-4551: xen: XSA-75: Host crash due to
guest VMX instruction execution

- The upstream version of checking for xend when using the 'xl'
command is used is not working.

- bnc#840997 - It is possible to start a VM twice on the same node.

- bnc#848657 - xen: CVE-2013-4494: XSA-73: Lock order
reversal between page allocation and grant table locks