CVE-2016-9382

Name: CVE-2016-9382
Creator: NVD / NIST
Published: 2017-01-23T21:59:02.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.45%

Last modified Jun 17, 2026

CVE-2016-9382 is a vulnerability of currently unknown severity. Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode.

Metrics

EPSS Probability

0.45%

35.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Xen	Xen	4.0.0
Xen	Xen	4.0.1
Xen	Xen	4.0.2
Xen	Xen	4.0.3
Xen	Xen	4.0.4
Xen	Xen	4.1.0
Xen	Xen	4.1.1
Xen	Xen	4.1.2
Xen	Xen	4.1.3
Xen	Xen	4.1.4
Xen	Xen	4.1.5
Xen	Xen	4.1.6.1
Xen	Xen	4.2.0
Xen	Xen	4.2.1
Xen	Xen	4.2.2
Xen	Xen	4.2.3
Xen	Xen	4.2.4
Xen	Xen	4.2.5
Xen	Xen	4.3.0
Xen	Xen	4.3.1
Xen	Xen	4.3.2
Xen	Xen	4.3.3
Xen	Xen	4.3.4
Xen	Xen	4.4.0
Xen	Xen	4.4.1
Xen	Xen	4.4.2
Xen	Xen	4.4.3
Xen	Xen	4.4.4
Xen	Xen	4.5.0
Xen	Xen	4.5.1
Xen	Xen	4.5.2
Xen	Xen	4.5.3
Xen	Xen	4.5.5
Xen	Xen	4.6.0
Xen	Xen	4.6.1
Xen	Xen	4.6.3
Xen	Xen	4.6.4
Xen	Xen	4.7.0
Xen	Xen	4.7.1
Citrix	Xenserver	6.0.2
Citrix	Xenserver	6.2.0
Citrix	Xenserver	6.5
Citrix	Xenserver	7.0

References

http://www.securityfocus.com/bid/94470Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037341Third Party Advisory, VDB Entry
http://xenbits.xen.org/xsa/advisory-192.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201612-56
https://support.citrix.com/article/CTX218775Patch, Third Party Advisory
http://www.securityfocus.com/bid/94470Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037341Third Party Advisory, VDB Entry
http://xenbits.xen.org/xsa/advisory-192.htmlPatch, Vendor Advisory
https://security.gentoo.org/glsa/201612-56
https://support.citrix.com/article/CTX218775Patch, Third Party Advisory

Timeline

Published: Jan 23, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-9382?

How severe is CVE-2016-9382?

Severity scoring for CVE-2016-9382 is pending analysis. The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2016-9382?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-9382?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST