Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service…
Priority LOW 26CWE-20Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- Low
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service (host crash) by specifying user mode execution without user-mode pagetables.
Why it matters now
EPSS 0.00667 52nd percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 19
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* | up to 4.0.1 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.0.2:*:*:*:*:*:*:* | 3.0.2 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.0.3:*:*:*:*:*:*:* | 3.0.3 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.0.4:*:*:*:*:*:*:* | 3.0.4 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.1.3:*:*:*:*:*:*:* | 3.1.3 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.1.4:*:*:*:*:*:*:* | 3.1.4 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.2.0:*:*:*:*:*:*:* | 3.2.0 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.2.1:*:*:*:*:*:*:* | 3.2.1 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.2.2:*:*:*:*:*:*:* | 3.2.2 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.2.3:*:*:*:*:*:*:* | 3.2.3 | Vulnerable | Xen |
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* Versions up to 4.0.1 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.0.2:*:*:*:*:*:*:* Versions 3.0.2 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.0.3:*:*:*:*:*:*:* Versions 3.0.3 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.0.4:*:*:*:*:*:*:* Versions 3.0.4 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.1.3:*:*:*:*:*:*:* Versions 3.1.3 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.1.4:*:*:*:*:*:*:* Versions 3.1.4 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.2.0:*:*:*:*:*:*:* Versions 3.2.0 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.2.1:*:*:*:*:*:*:* Versions 3.2.1 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.2.2:*:*:*:*:*:*:* Versions 3.2.2 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.2.3:*:*:*:*:*:*:* Versions 3.2.3 Vulnerable ·Xen
Show 9 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:xen:xen:3.3.0:*:*:*:*:*:*:* | 3.3.0 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.3.1:*:*:*:*:*:*:* | 3.3.1 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.3.2:*:*:*:*:*:*:* | 3.3.2 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.4.0:*:*:*:*:*:*:* | 3.4.0 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.4.1:*:*:*:*:*:*:* | 3.4.1 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.4.2:*:*:*:*:*:*:* | 3.4.2 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.4.3:*:*:*:*:*:*:* | 3.4.3 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:3.4.4:*:*:*:*:*:*:* | 3.4.4 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.0.0:*:*:*:*:*:*:* | 4.0.0 | Vulnerable | Xen |
- cpe:2.3:o:xen:xen:3.3.0:*:*:*:*:*:*:* Versions 3.3.0 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.3.1:*:*:*:*:*:*:* Versions 3.3.1 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.3.2:*:*:*:*:*:*:* Versions 3.3.2 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.4.0:*:*:*:*:*:*:* Versions 3.4.0 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.4.1:*:*:*:*:*:*:* Versions 3.4.1 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.4.2:*:*:*:*:*:*:* Versions 3.4.2 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.4.3:*:*:*:*:*:*:* Versions 3.4.3 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:3.4.4:*:*:*:*:*:*:* Versions 3.4.4 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.0.0:*:*:*:*:*:*:* Versions 4.0.0 Vulnerable ·Xen
Remediation
Red Hat 1 advisory
- RHSA-2011:0833 Released 2011-05-31 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux (v. 5.6.z server) kernel-2.6.18-238.12.1.el5, kernel-2.6.18-238.12.1.el5.ia64, kernel-PAE-2.6.18-238.12.1.el5 +14
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux (v. 5.6.z server) | Fixed | RHSA-2011:0833 |
Timeline
- 2026-10-02 Threatist record created from CVE-2011-1166
- 2026-10-03 Alias added: GHSA-cr7m-pjw9-g2r9
References
More Xen vulnerabilities
- TI-2012-00210 The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix… CVSS 2.0HIGH 7.2
- TI-2023-07042 Information disclosure through error messages in AMD Ryzen™ 3000 Series Desktop… CVSS 3.1MEDIUM 5.5
- TI-2015-04333 The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used… CVSS 2.0HIGH 9.3
- TI-2015-06741 The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows… CVSS 3.1CRITICAL 10.0
- TI-2018-06436 A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures… CVSS 3.0HIGH 7.8
- TI-2024-20522 x86: Incorrect logic for BTC/SRSO mitigations CVSS 3.1HIGH 7.5
Sources
- CVE-2011-1166 · CVE Program
- CVE-2011-1166 · NVD
- FIRST EPSS
- GHSA-cr7m-pjw9-g2r9 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-1166 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences