[Oraclevm-errata] OVMSA-2016-0177 Important: Oracle VM 3.3 xen security update

Errata Announcements for Oracle VM oraclevm-errata at oss.oracle.com
Tue Dec 13 17:19:24 PST 2016


Oracle VM Security Advisory OVMSA-2016-0177

The following updated rpms for Oracle VM 3.3 have been uploaded to the 
Unbreakable Linux Network:

x86_64:
xen-4.3.0-55.el6.119.63.x86_64.rpm
xen-tools-4.3.0-55.el6.119.63.x86_64.rpm


SRPMS:
http://oss.oracle.com/oraclevm/server/3.3/SRPMS-updates/xen-4.3.0-55.el6.119.63.src.rpm



Description of changes:

[4.3.0-55.el6.119.63]
- From: Jan Beulich <jbeulich at suse.com>
   Subject: x86emul: CMPXCHG8B ignores operand size prefix
   Otherwise besides mis-handling the instruction, the comparison failure
   case would result in uninitialized stack data being handed back to the
   guest in rDX:rAX (32 bits leaked for 32-bit guests, 96 bits for 64-bit
   ones).
   This is XSA-200.
   Signed-off-by: Jan Beulich <jbeulich at suse.com>
   Backported-by: Zhenzhong Duan <zhenzhong.duan at oracle.com>
   Reviewed-by: Boris Ostrovsky <boris.ostrovsky at oracle.com> [bug 25180312]




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