xen: PCI MSI mask bits inadvertently exposed to guests (xsa-129)
Published Jun 3, 2015
7.8
HIGHCVSS 2.0
EPSS 3.43%
Description
Xen 3.3.x through 4.5.x does not properly restrict access to PCI MSI mask bits, which allows local x86 HVM guest users to cause a denial of service (unexpected interrupt and host crash) via unspecified vectors.
Affected products
No data.
- 3.3.0
- 3.3.1
- 3.3.2
- 3.4.0
- 3.4.1
- 3.4.2
- 3.4.3
- 3.4.4
- 4.0.0
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.4
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.4
- 4.1.5
- 4.1.6.1
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.4
- 4.4.0
- 4.4.1
- 4.5.0
No data.
Red Hat Enterprise Linux 5
xen
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xen | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does affect then Xen packages as shipped with Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
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:N/AC:L/Au:N/C:N/I:N/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 2, 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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.43% (0.03427) | 88.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.43% (0.03427) | 87.34th | v5 (v2026.06.15) |
| Mar 30, 2025 | 8.33% (0.08326) | 91.45th | v4 (v2025.03.14) |
| Mar 29, 2025 | 12.40% (0.12404) | 89.81th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.33% (0.08326) | 91.65th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.90% (0.01900) | 89.00th | v3 (v2023.03.01) |
| Jun 27, 2024 | 2.06% (0.02063) | 89.11th | v3 (v2023.03.01) |
| Jul 3, 2023 | 2.60% (0.02599) | 88.78th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.27% (0.02272) | 87.87th | 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 (20)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160171.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160685.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html vendor-advisoryx_refsource_SUSE
- http://support.citrix.com/article/CTX201145 x_refsource_CONFIRM
- http://www.debian.org/security/2015/dsa-3284 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2015/dsa-3286 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/74950 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1032464 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2630-1 vendor-advisoryx_refsource_UBUNTU
- http://xenbits.xen.org/xsa/advisory-129.html x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2015-4104 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1223851 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-4104
- https://security.gentoo.org/glsa/201604-03 vendor-advisoryx_refsource_GENTOO
- https://support.citrix.com/article/CTX206006 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2015-4104
Change history (0)
No recorded changes yet.