Security update for xen
This update fixes the following security issues:
- bsc#947165 - CVE-2015-7311: xen: libxl fails to honour
readonly flag on disks with qemu-xen (xsa-142)
- bsc#954405 - CVE-2015-8104: Xen: guest to host DoS by
triggering an infinite loop in microcode via #DB exception
- bsc#954018 - CVE-2015-5307: xen: x86: CPU lockup during
fault delivery (XSA-156)
- bsc#950704 - CVE-2015-7970: xen: x86: Long latency
populate-on-demand operation is not preemptible (XSA-150)
- Submitted by Charles Arnold (charlesa)
Fixed bugs
bnc#947165
CVE-2015-7311: xen: libxl fails to honour readonly flag on disks with qemu-xen (xsa-142)
bnc#950704
CVE-2015-7970: xen: x86: Long latency populate-on-demand operation is not preemptible (XSA-150)
bnc#954405
CVE-2015-8104: Xen: guest to host DoS by triggering an infinite loop in microcode via #DB exception (XSA-156)
bnc#954018
CVE-2015-5307: xen: x86: CPU lockup during fault delivery (XSA-156)