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CVE-2016-3158 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:3.8 LOWVector:CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.html	CVE	Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.html	CVE	Third Party Advisory
http://support.citrix.com/article/CTX209443	CVE
http://www.debian.org/security/2016/dsa-3554	CVE
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html	CVE	Vendor Advisory
http://www.securityfocus.com/bid/85714	CVE	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1035435	CVE	Third Party AdvisoryVDB Entry
http://xenbits.xen.org/xsa/advisory-172.html	CVE	Vendor Advisory
http://xenbits.xen.org/xsa/xsa172-4.3.patch	CVE	Patch
http://xenbits.xen.org/xsa/xsa172.patch	CVE	Patch
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.html	[email protected]	Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.html	[email protected]	Third Party Advisory
http://support.citrix.com/article/CTX209443	[email protected]
http://www.debian.org/security/2016/dsa-3554	[email protected]
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html	[email protected]	Vendor Advisory
http://www.securityfocus.com/bid/85714	[email protected]	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1035435	[email protected]	Third Party AdvisoryVDB Entry
http://xenbits.xen.org/xsa/advisory-172.html	[email protected]	Vendor Advisory
http://xenbits.xen.org/xsa/xsa172-4.3.patch	[email protected]	Patch
http://xenbits.xen.org/xsa/xsa172.patch	[email protected]	Patch

see all 20 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-200	Exposure of Sensitive Information to an Unauthorized Actor	[email protected]
CWE-284	Improper Access Control	[email protected]

Affected Products

Product	Versions
xen xen	<= 4.4.0
CPE cpe:2.3:o:xen:xen:::::::: Remediation No remediation found in references.
fedoraproject fedora	22 23
CPE cpe:2.3:o:fedoraproject:fedora:22:::::::* cpe:2.3:o:fedoraproject:fedora:23:::::::* Remediation No remediation found in references.
oracle vm server	3.3 3.4
CPE cpe:2.3:o:oracle:vm_server:3.3:::::::* cpe:2.3:o:oracle:vm_server:3.4:::::::* Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 6, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Dec 3, 2016	CVE Modified	[email protected]
Sep 12, 2016	Modified Analysis	[email protected]
Sep 9, 2016	CVE Modified	[email protected]
Apr 20, 2016	Modified Analysis	[email protected]
Apr 15, 2016	Initial Analysis	[email protected]

CVE-2016-3158 Details

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Affected Products

CPE

Remediation

CPE

Remediation

CPE

Remediation

Change History

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