CVE-2014-7155

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not...

5.8 MediumFix available

CVE-2014-7155 is a medium vulnerability (CVSS 5.8) in Xen, published November 22, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.97%, the 62nd percentile. Fixed in xen 4.4.1-3.

What does this mean?

Severity: 5.8 MediumCVSS 2.0, NVD
Exploit chance: 0.97%EPSS, 62nd percentile
Exploitation: None knownNot on CISA’s or ENISA’s lists
Fixed in: 4.4.1-3xen +5 more

Description

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction.

Exploit likelihood

0.97%Down 0.3 points since Feb 4, 2022

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`xen` Debian:12	before 4.4.1-3	4.4.1-3
`xen` Debian:13	before 4.4.1-3	4.4.1-3
`xen` Debian:14	before 4.4.1-3	4.4.1-3
`xen` Debian:7 From an advisory covering 5 CVEs	before 4.1.4-3+deb7u3, plus listed versions 4.1.4-34.1.4-3+deb7u14.1.4-3+deb7u2	4.1.4-3+deb7u3
`xen` Ubuntu:14.04:LTS	before 4.4.0-0ubuntu5.2, plus listed versions 4.3.0-1ubuntu14.3.0-1ubuntu24.3.0-1ubuntu34.3.0-1ubuntu44.3.0-1ubuntu5 Show 4 moreShow less 4.4.0-0ubuntu34.4.0-0ubuntu44.4.0-0ubuntu54.4.0-0ubuntu5.1	4.4.0-0ubuntu5.2
`xen` openSUSE:Tumbleweed From an advisory covering 124 CVEs	before 4.7.0_12-1.3	4.7.0_12-1.3

What each source reports

NVD Score used5.8

Record: CVE-2014-7155
CVSS 2.0: 5.8 MediumAV:A/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-264
Updated: 2026-11-02

CVE ListNo score

Record: CVE-2014-7155
Updated: 2026-11-02

EUVDEUVD-2014-7032No score

Record: EUVD-2014-7032
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7w7p-f566-6r85No score

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not...

Record: GHSA-7w7p-f566-6r85
Updated: 2026-11-02

OSVNo score

Record: CVE-2014-7155
Updated: 2026-11-02

OSVDEBIAN-CVE-2014-7155No score

Record: DEBIAN-CVE-2014-7155
Updated: 2026-11-02

OSVopenSUSE-SU-2024:10196-1No score

xen-4.7.0_12-1.3 on GA media

These are all security issues fixed in the xen-4.7.0_12-1.3 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:10196-1
Updated: 2026-11-02

OSVSUSE-SU-2015:0940-1No score

Security update for Xen

This update fixes the following security issues in Xen:

* CVE-2012-5510: Grant table version switch list corruption
  vulnerability (XSA-26)
* CVE-2012-5511: Several HVM operations do not validate the range of
  their inputs (XSA-27)
* CVE-2012-5513: XENMEM_exchange may overwrite hypervisor memory
  (XSA-29)
* CVE-2012-5514: Missing unlock in
  guest_physmap_mark_populate_on_demand() (XSA-30)
* CVE-2012-5515: Several memory hypercall operations allow invalid
  extent order values (XSA-31)

Also the following fix has been applied:

* bnc#777628 - guest 'disappears' after live migration
  Updated block-dmmd script

Security Issues references:

* CVE-2012-5513
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5513>
* CVE-2012-5514
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5514>
* CVE-2012-5511
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5511>
* CVE-2012-5510
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5510>
* CVE-2012-5515
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5515>

Record: SUSE-SU-2015:0940-1
Updated: 2026-11-02

OSVUBUNTU-CVE-2014-7155No score

Record: UBUNTU-CVE-2014-7155
Updated: 2026-11-02

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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