[Oraclevm-errata] OVMSA-2013-0072 Important: Oracle VM 3.2 xen security update

Errata Announcements for Oracle VM oraclevm-errata at oss.oracle.com
Mon Oct 14 09:02:08 PDT 2013


Oracle VM Security Advisory OVMSA-2013-0072

The following updated rpms for Oracle VM 3.2 have been uploaded to the 
Unbreakable Linux Network:

x86_64:
xen-4.1.3-25.el5.53.26.x86_64.rpm
xen-devel-4.1.3-25.el5.53.26.x86_64.rpm
xen-tools-4.1.3-25.el5.53.26.x86_64.rpm


SRPMS:
http://oss.oracle.com/oraclevm/server/3.2/SRPMS-updates/xen-4.1.3-25.el5.53.26.src.rpm



Description of changes:

[4.1.3-25.el5.53.26]
- x86: check segment descriptor read result in 64-bit OUTS emulation
   When emulating such an operation from a 64-bit context (CS has long
   mode set), and the data segment is overridden to FS/GS, the result of
   reading the overridden segment's descriptor (read_descriptor) is not
   checked. If it fails, data_base is left uninitialized.
   This can lead to 8 bytes of Xen's stack being leaked to the guest
   (implicitly, i.e. via the address given in a #PF).
   Coverity-ID: 1055116
   This is CVE-2013-4368 / XSA-67.
   Signed-off-by: Matthew Daley <mattjd at gmail.com>
   Fix formatting.
   Signed-off-by: Jan Beulich <jbeulich at suse.com>
   Signed-off-by: Chuck Anderson <chuck.anderson at oracle.com>
   Reviewed-by: Guangyu Sun <guangyu.sun at oracle.com> [bug 17529205] 
{CVE-2013-4368}




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