CVE-2014-1666
Published Jan 26, 2014 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which allows local PV guests to cause a denial of service (host or guest malfunction) or possibly gain privileges via unspecified vectors.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which allows local PV guests to cause a denial of service (host or guest malfunction) or possibly gain privileges via unspecified vectors.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- 102536 ↗
- 65125 ↗
- xen-cve20141666-priv-esc(90675) ↗
- SUSE-SU-2014:0373 ↗
- FEDORA-2014-1552 ↗
- support.citrix.com ↗
- GLSA-201407-03 ↗
- FEDORA-2014-1559 ↗
- [oss-security] 20140123 Xen Security Advisory 87 (CVE-2014-1666) - PHYSDEVOP_{prepare,release}_msix exposed to unprivileged guests ↗
- 1029684 ↗
- SUSE-SU-2014:0372 ↗
- xenbits.xen.org ↗
Record history
Published Jan 26, 2014 · Last refreshed Nov 3, 2026