The xrstor function in arch/x86/xstate.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.
References
Link | Resource |
---|---|
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.html | Third Party Advisory |
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.html | Third Party Advisory |
http://support.citrix.com/article/CTX209443 | |
http://www.debian.org/security/2016/dsa-3554 | |
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html | Vendor Advisory |
http://www.securityfocus.com/bid/85714 | Third Party Advisory VDB Entry |
http://www.securitytracker.com/id/1035435 | Third Party Advisory VDB Entry |
http://xenbits.xen.org/xsa/advisory-172.html | Vendor Advisory |
http://xenbits.xen.org/xsa/xsa172-4.3.patch | Patch |
http://xenbits.xen.org/xsa/xsa172.patch | Patch |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2016-04-13T16:00:00
Updated: 2016-11-30T18:57:01
Reserved: 2016-03-15T00:00:00
Link: CVE-2016-3158
JSON object: View
NVD Information
Status : Modified
Published: 2016-04-13T16:59:18.350
Modified: 2016-12-03T03:26:40.820
Link: CVE-2016-3158
JSON object: View
Redhat Information
No data.