[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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