xen: unmediated PCI register access in qemu (xsa-131)
Published Jun 3, 2015
4.6
MEDIUMCVSS 2.0
EPSS 0.48%
Description
QEMU does not properly restrict write access to the PCI config space for certain PCI pass-through devices, which might allow local x86 HVM guests to gain privileges, cause a denial of service (host crash), obtain sensitive information, or possibly have other unspecified impact via unknown vectors.
Affected products
No data.
Configuration 2
- 7.0
- 8.0
Configuration 3
- 20
- 21
- 22
Configuration 4
- 11
- 12
- 11
- 11
- 11
- 12
- 11
- 12
Configuration 5
Configuration 6
- 12.04
- 14.04
- 14.10
- 15.04
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:L/AC:L/Au:N/C:P/I:P/A:P
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 3, 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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.48% (0.00483) | 39.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.48% (0.00483) | 37.66th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00087) | 22.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00064) | 30.08th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.06% (0.00064) | 28.17th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00064) | 26.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
References (20)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160171.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160685.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://support.citrix.com/article/CTX201145 x_refsource_CONFIRMThird Party Advisory
- http://www.debian.org/security/2015/dsa-3284 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.debian.org/security/2015/dsa-3286 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.securityfocus.com/bid/74949 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1032467 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2630-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-131.html x_refsource_CONFIRMThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2015-4106 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1223859 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-4106
- https://security.gentoo.org/glsa/201604-03 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://support.citrix.com/article/CTX206006 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-4106
Change history (0)
No recorded changes yet.