xen: libxl fails to honour readonly flag on disks with qemu-xen (xsa-142)
Published Oct 1, 2015
3.6
LOWCVSS 2.0
EPSS 0.42%
Description
libxl in Xen 4.1.x through 4.6.x does not properly handle the readonly flag on disks when using the qemu-xen device model, which allows local guest users to write to a read-only disk image.
Affected products
No data.
- 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
- 4.2.4
- 4.2.5
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.4
- 4.4.0
- 4.4.0
- 4.4.1
- 4.5.0
- 4.5.1
No data.
Red Hat Enterprise Linux 5
xen
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the versions of the xen package as shipped with Red Hat Enterprise Linux 5.
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:N/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 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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.42% (0.00417) | 33.64th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.42% (0.00417) | 33.07th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00089) | 23.13th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00068) | 31.81th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.07% (0.00068) | 29.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00068) | 27.62th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (14)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167077.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167792.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167820.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2015/dsa-3414 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/76823 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1033633 vdb-entryx_refsource_SECTRACK
- http://xenbits.xen.org/xsa/advisory-142.html x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2015-7311 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1257893 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1265269 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-7311
- https://security.gentoo.org/glsa/201604-03 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-7311
Change history (0)
No recorded changes yet.