MEDIUM
xen: x86 HVM: Overflow of sh_ctxt->seg_reg[]
Published Sep 21, 2016
6.3
MEDIUMCVSS 3.0
EPSS 0.39%
Description
Buffer overflow in Xen 4.7.x and earlier allows local x86 HVM guest OS administrators on guests running with shadow paging to cause a denial of service via a pagetable update.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
4.1 MEDIUM NVD
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1 other source (Red Hat) ▾
6.3 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1.5 LOW NVD
AV:L/AC:M/Au:S/C:N/I:N/A:P
Access Vector Local
Access Complexity Medium
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.39% 0.00392
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00392
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 | 0.39% (0.00392) | 30.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00395) | 31.07th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00070) | 18.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00069) | 32.26th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.07% (0.00069) | 30.15th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00069) | 28.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.10% (0.01104) | 52.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.10% (0.01104) | 50.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
Weaknesses (1)
References (13)
- http://support.citrix.com/article/CTX216071 x_refsource_CONFIRMThird Party Advisory
- http://www.debian.org/security/2016/dsa-3663 vendor-advisoryx_refsource_DEBIAN
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/92864 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1036753 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://xenbits.xen.org/xsa/advisory-187.html x_refsource_CONFIRMPatchVendor Advisory
- http://xenbits.xen.org/xsa/xsa187-0001-x86-shadow-Avoid-overflowing-sh_ctxt-seg_reg.patch x_refsource_CONFIRMPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2016-7094 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1370332 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-7094
- https://security.gentoo.org/glsa/201611-09 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-7094
- https://xenbits.xen.org/xsa/advisory-187.html
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 21, 2016
Updated Aug 6, 2024
Reserved Aug 25, 2016
Link CVE-2016-7094
CISA Vulnrichment
Updated n/a