CVE-2014-7156

Name: CVE-2014-7156
Creator: NVD / NIST
Published: 2014-10-02T14:55:05.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.85%

Last modified Jun 17, 2026

CVE-2014-7156 is a vulnerability of currently unknown severity. The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.

Metrics

EPSS Probability

0.85%

53.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Xen	Xen	3.3.0
Xen	Xen	3.3.1
Xen	Xen	3.3.2
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	4.3.0
Xen	Xen	4.3.1
Xen	Xen	4.4.0
Xen	Xen	4.4.1

References

Timeline

Published: Oct 2, 2014
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2014-7156?

How severe is CVE-2014-7156?

Severity scoring for CVE-2014-7156 is pending analysis. The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2014-7156?

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-2014-7156?

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

Scan your code now

Source: NVD / NIST