TI-2011-01708 Aliases CVE-2011-1936 GHSA-36h3-x748-qfw8

Xen, when using x86 Intel processors and the VMX virtualization extension is enabled…

LOW 22Published 2014-01-07 · Updated 2024-08-06

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: High
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, when using x86 Intel processors and the VMX virtualization extension is enabled, does not properly handle cpuid instruction emulation when exiting the VM, which allows local guest users to cause a denial of service (guest crash) via unspecified vectors.

Why it matters now

EPSS 0.0047 40th 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 · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:xen:xen:-:::::::*	not specified by NVD	Vulnerable	Xen

cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Xen

Remediation

Red Hat 1 advisory

RHSA-2011:0927 Released 2011-07-15 · Red Hat rating Important
kernel security and bug fix update
- Red Hat Enterprise Linux (v. 5.6.z server) kernel-2.6.18-238.19.1.el5, kernel-2.6.18-238.19.1.el5.ia64, kernel-PAE-2.6.18-238.19.1.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-2011:0927

Timeline

2026-10-02 Threatist record created from CVE-2011-1936
2026-10-03 Alias added: GHSA-36h3-x748-qfw8

References

Advisory 1

RHSA-2011:0927

Other 1

[oss-security] 20110707 CVE-2011-1780, CVE-2011-1936, kernel/xen issues

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

See all 489 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences