CVE-2014-8866

The compatibility mode hypercall argument translation in Xen 3.3.x through 4.4.x, when running on...

4.7 MediumFix available

The compatibility mode hypercall argument translation in Xen 3.3.x through 4.4.x, when running on a 64-bit hypervisor, allows local 32-bit HVM guests to cause a denial of service (host crash) via vectors involving altering the high halves of registers while in 64-bit mode.

Exploit likelihood

0.43%Down 0.9 points since Feb 4, 2022

What each source reports

NVD Score used 4.7

Record: CVE-2014-8866
CVSS 2.0: 4.7 MediumAV:L/AC:M/Au:N/C:N/I:N/A:C
Weakness: CWE-17
Updated: 2026-11-02

CVE List No score

Record: CVE-2014-8866
Updated: 2026-11-02

EUVDEUVD-2014-8696 No score

Record: EUVD-2014-8696
Updated: 2026-11-03

GitHub AdvisoriesGHSA-gqm4-jx6m-62vq No score

The compatibility mode hypercall argument translation in Xen 3.3.x through 4.4.x, when running on...

Record: GHSA-gqm4-jx6m-62vq
Updated: 2026-11-02

OSV No score

Record: CVE-2014-8866
Updated: 2026-11-02

OSVDEBIAN-CVE-2014-8866 No score

Record: DEBIAN-CVE-2014-8866
Updated: 2026-11-02

OSVSUSE-SU-2015:0940-1 No 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-2014-8866 No score

Record: UBUNTU-CVE-2014-8866
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`xen` Debian:12	before 4.4.1-5	4.4.1-5
`xen` Debian:13	before 4.4.1-5	4.4.1-5
`xen` Debian:14	before 4.4.1-5	4.4.1-5
`xen` Debian:7 From an advisory covering 5 CVEs	before 4.1.4-3+deb7u4, plus listed versions 4.1.4-34.1.4-3+deb7u14.1.4-3+deb7u24.1.4-3+deb7u3	4.1.4-3+deb7u4
`xen` Ubuntu:14.04:LTS	before 4.4.1-0ubuntu0.14.04.2, plus listed versions 4.3.0-1ubuntu14.3.0-1ubuntu24.3.0-1ubuntu34.3.0-1ubuntu44.3.0-1ubuntu5 Show 6 moreShow less 4.4.0-0ubuntu34.4.0-0ubuntu44.4.0-0ubuntu54.4.0-0ubuntu5.14.4.0-0ubuntu5.24.4.1-0ubuntu0.14.04.1	4.4.1-0ubuntu0.14.04.2

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.

In short

CVE-2014-8866 is a medium vulnerability (CVSS 4.7) in Xen, published November 22, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. Fixed in xen 4.4.1-5.

References

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