xen: information leak via internal x86 system device emulation (XSA-121)
Published Mar 12, 2015
2.1
LOWCVSS 2.0
EPSS 0.41%
Description
The emulation routines for unspecified X86 devices in Xen 3.2.x through 4.5.x does not properly initialize data, which allow local HVM guest users to obtain sensitive information via vectors involving an unsupported access size.
Affected products
No data.
- 3.2.0
- 3.2.1
- 3.2.2
- 3.2.3
- 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
- 4.4.0
- 4.4.0
- 4.4.1
- 4.5.0
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 Xen hypervisor 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:P/I:N/A:N
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 | 0.41% (0.00414) | 33.28th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.41% (0.00414) | 32.77th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00082) | 21.56th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00060) | 27.26th | v3 (v2023.03.01) |
| Jun 6, 2024 | 0.06% (0.00060) | 25.16th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00060) | 23.13th | 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 (16)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html vendor-advisoryx_refsource_SUSE
- http://support.citrix.com/article/CTX200484 x_refsource_CONFIRM
- http://www.debian.org/security/2015/dsa-3181 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/72954 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1031806 vdb-entryx_refsource_SECTRACK
- http://www.securitytracker.com/id/1031836 vdb-entryx_refsource_SECTRACK
- http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-423503.htm x_refsource_CONFIRM
- http://xenbits.xen.org/xsa/advisory-121.html x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2015-2044 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1195290 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-2044
- https://security.gentoo.org/glsa/201504-04 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-2044
Change history (0)
No recorded changes yet.