CVE-2009-3722

The handle_dr function in arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 2.6...

7.1 High

The handle_dr function in arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 2.6.31.1 does not properly verify the Current Privilege Level (CPL) before accessing a debug register, which allows guest OS users to cause a denial of service (trap) on the host OS via a crafted application.

Exploit likelihood

2.28%Up 0.7 points since Feb 4, 2022

What each source reports

NVD Score used 7.1

Record: CVE-2009-3722
CVSS 2.0: 7.1 HighAV:N/AC:M/Au:N/C:N/I:N/A:C
Weakness: CWE-264
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-3722
Updated: 2026-11-02

EUVDEUVD-2009-3695 No score

Record: EUVD-2009-3695
Updated: 2026-11-03

GitHub AdvisoriesGHSA-qx58-4v64-2f59 No score

The handle_dr function in arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 2.6...

Record: GHSA-qx58-4v64-2f59
Updated: 2026-11-02

Affected products

linux kernel

Affected packages

Affected packages
Package	Affected	Fixed
`kvm` Debian:5.0 From an advisory covering 3 CVEs	before 72+dfsg-5~lenny4, plus listed versions 72+dfsg-472+dfsg-5~lenny172+dfsg-5~lenny272+dfsg-5~lenny3	72+dfsg-5~lenny4
`kmod-kvm` Red Hat:rhel_virtualization:5::client From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`kvm` Red Hat:rhel_virtualization:5::client From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`kvm-debuginfo` Red Hat:rhel_virtualization:5::client From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`kvm-qemu-img` Red Hat:rhel_virtualization:5::client From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`kvm-tools` Red Hat:rhel_virtualization:5::client From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`kmod-kvm` Red Hat:rhel_virtualization:5::server From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`kvm` Red Hat:rhel_virtualization:5::server From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`kvm-debuginfo` Red Hat:rhel_virtualization:5::server From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`kvm-qemu-img` Red Hat:rhel_virtualization:5::server From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`kvm-tools` Red Hat:rhel_virtualization:5::server From an advisory covering 2 CVEs	before 0:83-105.el5_4.27	0:83-105.el5_4.27
`rhev-hypervisor` Red Hat:enterprise_linux:5::hypervisor From an advisory covering 4 CVEs	before 0:5.4-2.1.10.el5_4rhev2_1	0:5.4-2.1.10.el5_4rhev2_1
`rhev-hypervisor-pxe` Red Hat:enterprise_linux:5::hypervisor From an advisory covering 4 CVEs	before 0:5.4-2.1.10.el5_4rhev2_1	0:5.4-2.1.10.el5_4rhev2_1

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-2009-3722 is a high vulnerability (CVSS 7.1) in Linux Kernel, published October 30, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.28%, the 83rd percentile. No source names a fixed version.

References

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