What is CVE-2009-3722?

CVE-2009-3722 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Permissions, Privileges and Access Control flaw (CWE-264). CVE-2009-3722 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-3722?

CVE-2009-3722 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is AV:N/AC:M/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2009-3722?

No patch is currently available for CVE-2009-3722. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2009-3722 actively exploited?

CVE-2009-3722 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/264.html

CVE-2009-3722

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.

Package Linux Kernel

Published 2009-10-30

Last modified 2026-04-23

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.1

out of 10

High

Attack Vector

Network

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

None

Integrity

None

Availability

Vector string

AV:N/AC:M/Au:N/C:N/I:N/A:C

Weakness type

CWE-264

CVE-2009-3722 is a Permissions, Privileges and Access Control vulnerability

What is Permissions, Privileges and Access Control?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2009-3722 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Marc
http://marc.info/?l=oss-security&m=125678631403558&w=2
Marc
http://marc.info/?l=oss-security&m=125680666827148&w=2
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.9

Vendor Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.1

Vendor Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc1

Vendor Advisory
Mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
Red Hat
http://www.redhat.com/support/errata/RHSA-2010-0126.html
Securityfocus
http://www.securityfocus.com/bid/37221
Ubuntu Security
http://www.ubuntu.com/usn/usn-864-1
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=531660
Oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9892
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0a79b009525b160081d75cef5dbf45817956acf2
Patch

Details

CVE ID CVE-2009-3722

Severity High

CVSS score 7.1 / 10

CVSS version 2.0

Published 2009-10-30

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-3722?

CVE-2009-3722 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2009-3722 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-3722?

CVE-2009-3722 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 2.0). The vector string is AV:N/AC:M/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2009-3722?

No patch is currently available for CVE-2009-3722. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2009-3722 actively exploited?

No — CVE-2009-3722 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. View CWE-264 on MITRE CWE →