CVE-2016-1571

Name: CVE-2016-1571
Creator: NVD / NIST
Published: 2016-01-22T15:59:06.867+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.28%

Last modified Jun 17, 2026

CVE-2016-1571 is a vulnerability of currently unknown severity. The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service (host crash) via a non-canonical guest address in an INVVPID instruction, which triggers a hypervisor bug check.. EPSS estimates a 1.28% chance of exploitation in the next 30 days.

Description

The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service (host crash) via a non-canonical guest address in an INVVPID instruction, which triggers a hypervisor bug check.

Metrics

EPSS Probability

1.28%

66.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-17

Affected Software

Vendor	Product	Versions	Update
Citrix	Xenserver	<= 6.5	Sp1
Xen	Xen	3.3.0	—
Xen	Xen	3.3.1	—
Xen	Xen	3.3.2	—
Xen	Xen	3.4.0	—
Xen	Xen	3.4.1	—
Xen	Xen	3.4.2	—
Xen	Xen	3.4.3	—
Xen	Xen	3.4.4	—
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	—
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	4.5.0	—
Xen	Xen	4.5.1	—
Xen	Xen	4.5.2	—
Xen	Xen	4.6.0	—

References

http://support.citrix.com/article/CTX205496Third Party Advisory
http://www.debian.org/security/2016/dsa-3519
http://www.securitytracker.com/id/1034745Third Party Advisory
http://xenbits.xen.org/xsa/advisory-168.htmlVendor Advisory
http://support.citrix.com/article/CTX205496Third Party Advisory
http://www.debian.org/security/2016/dsa-3519
http://www.securitytracker.com/id/1034745Third Party Advisory
http://xenbits.xen.org/xsa/advisory-168.htmlVendor Advisory

Timeline

Published: Jan 22, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-1571?

How severe is CVE-2016-1571?

Severity scoring for CVE-2016-1571 is pending analysis. The EPSS model estimates a 1.28% probability of exploitation in the next 30 days.

How do I fix CVE-2016-1571?

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-2016-1571?

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

Scan your code now

Source: NVD / NIST