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CVE-2014-7156

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does...

3.3 LowFix available

CVE-2014-7156 is a low vulnerability (CVSS 3.3) in Xen, published November 22, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.85%, the 58th percentile. Fixed in xen 4.4.1-3.

What does this mean?
Severity
3.3 LowCVSS 2.0, NVD
Exploit chance
0.85%EPSS, 58th 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 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.

Exploit likelihood

0.85%Down 0.7 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
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 used3.3

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.

Record
CVE-2014-7156
CVSS 2.0
3.3 LowAV:A/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-264
Updated
2026-11-02
CVE ListNo score

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.

Record
CVE-2014-7156
Updated
2026-11-02
EUVDEUVD-2014-7033No score

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.

Record
EUVD-2014-7033
Updated
2026-11-03
GitHub AdvisoriesGHSA-fwm9-x5p7-wwvwNo score

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does...

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.

Record
GHSA-fwm9-x5p7-wwvw
Updated
2026-11-02
OSVNo score

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.

Record
CVE-2014-7156
Updated
2026-11-02
OSVDEBIAN-CVE-2014-7156No score

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.

Record
DEBIAN-CVE-2014-7156
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-2014-7156No score

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.

Record
UBUNTU-CVE-2014-7156
Updated
2026-11-02

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

References

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