xen: x86: Privilege escalation in PV guests (XSA-182)
Published Aug 2, 2016
8.8
HIGHCVSS 3.0
EPSS 0.40%
Description
The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.
Affected products
No data.
Configuration 1
- 3.4.0
- 3.4.2
- 3.4.3
- 3.4.4
- 4.0.0
- 4.0.1
- 4.0.3
- 4.0.4
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.4
- 4.1.5
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.3.0
- 4.3.1
- 4.4.0
- 4.4.1
- 4.5.0
- 4.6.0
- 4.6.1
- 4.6.3
- 4.7.0
No data.
Red Hat Enterprise Linux 5
xen
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xen | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
AV:L/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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.40% (0.00400) | 31.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00404) | 31.91th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00091) | 23.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00062) | 26.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.59th | 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://support.citrix.com/article/CTX214954 x_refsource_CONFIRMVendor Advisory
- http://www.debian.org/security/2016/dsa-3633 vendor-advisoryx_refsource_DEBIAN
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html x_refsource_CONFIRMRelease Notes
- http://www.securityfocus.com/bid/92131 vdb-entryx_refsource_BIDThird Party Advisory
- http://www.securitytracker.com/id/1036446 vdb-entryx_refsource_SECTRACKThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-182.html x_refsource_CONFIRMMitigationPatchVendor Advisory
- http://xenbits.xen.org/xsa/xsa182-4.5.patch x_refsource_CONFIRMPatch
- http://xenbits.xen.org/xsa/xsa182-4.6.patch x_refsource_CONFIRMPatch
- http://xenbits.xen.org/xsa/xsa182-unstable.patch x_refsource_CONFIRMPatch
- https://access.redhat.com/security/cve/CVE-2016-6258 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1355987 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-6258
- https://security.gentoo.org/glsa/201611-09 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-6258
Change history (0)
No recorded changes yet.