xen: PHYSDEVOP_{prepare,release}_msix exposed to unprivileged guests
Published Jan 26, 2014
8.3
HIGHCVSS 2.0
EPSS 0.88%
Description
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.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
kernel-xen
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-xen | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5. This issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2 as we did not have support for Xen hypervisor.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:A/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.88% (0.00876) | 57.50th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.88% (0.00876) | 54.11th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.52% (0.03518) | 86.52th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.25% (0.08252) | 86.79th | v4 (v2025.03.14) |
| Mar 19, 2025 | 3.52% (0.03518) | 86.23th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.41% (0.01409) | 79.18th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.38% (0.00380) | 73.81th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.38% (0.00380) | 72.22th | v3 (v2023.03.01) |
| Jul 23, 2023 | 0.38% (0.00380) | 69.36th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.41% (0.00414) | 69.97th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (18)
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127580.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127607.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00010.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html vendor-advisoryx_refsource_SUSE
- http://osvdb.org/102536 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/56650 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://security.gentoo.org/glsa/glsa-201407-03.xml vendor-advisoryx_refsource_GENTOO
- http://support.citrix.com/article/CTX200288 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2014/01/24/6 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/65125 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1029684 vdb-entryx_refsource_SECTRACK
- http://xenbits.xen.org/xsa/advisory-87.html x_refsource_CONFIRM
- http://xenbits.xen.org/xsa/xsa87-unstable-4.3.patch x_refsource_MISCPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2014-1666 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1058395 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/90675 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2014-1666
- https://www.cve.org/CVERecord?id=CVE-2014-1666
Change history (0)
No recorded changes yet.