CVE-2011-1166

Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service (host...

5.5 MediumFix available

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.

Exploit likelihood

0.67%Down 0.9 points since Feb 4, 2022

What each source reports

NVD Score used 5.5

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.

Record: CVE-2011-1166
CVSS 2.0: 5.5 MediumAV:A/AC:L/Au:S/C:N/I:N/A:C
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

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.

Record: CVE-2011-1166
Updated: 2026-11-02

EUVDEUVD-2011-1176 No score

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.

Record: EUVD-2011-1176
Updated: 2026-11-03

GitHub AdvisoriesGHSA-cr7m-pjw9-g2r9 No score

Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service (host...

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.

Record: GHSA-cr7m-pjw9-g2r9
Weakness: CWE-20
Updated: 2026-11-02

OSV No score

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.

Record: CVE-2011-1166
Updated: 2026-11-02

OSVDEBIAN-CVE-2011-1166 No score

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.

Record: DEBIAN-CVE-2011-1166
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`xen` Debian:12	before 4.1.0-1	4.1.0-1
`xen` Debian:13	before 4.1.0-1	4.1.0-1
`xen` Debian:14	before 4.1.0-1	4.1.0-1
`xen` Debian:6.0 From an advisory covering 4 CVEs	before 4.0.1-4, plus listed versions 4.0.1-2	4.0.1-4
`kernel` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-PAE` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-PAE-debuginfo` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-PAE-devel` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-debug` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-debug-debuginfo` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5

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Affected packages
Package	Affected	Fixed
`kernel-debug-devel` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-debuginfo` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-debuginfo-common` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-devel` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-doc` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-kdump` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-kdump-debuginfo` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-kdump-devel` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-xen` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-xen-debuginfo` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5
`kernel-xen-devel` Red Hat:enterprise_linux:5::server From an advisory covering 14 CVEs	before 0:2.6.18-238.12.1.el5	0:2.6.18-238.12.1.el5

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-1166 is a medium vulnerability (CVSS 5.5) in Xen, published November 6, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.67%, the 52nd percentile. Fixed in xen 4.1.0-1.

References

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