PT-2009-5979 · Linux+1 · Linux Kernel+1

Eugene Teo · Published 2009-10-30 · Updated 2023-02-13 · CVE-2009-3722

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.31.1

Description The issue is related to the handle dr function in the KVM subsystem, which does not properly verify the Current Privilege Level (CPL) before accessing a debug register. This allows guest OS users to cause a denial of service (trap) on the host OS via a crafted application.

Recommendations For versions prior to 2.6.31.1, update to version 2.6.31.1 or later to resolve the issue.

Fix

DoS

Weakness Enumeration

CWE-264

Related Identifiers

CVE-2009-3722

DSA-1962-1

RHSA-2010:0126

RHSA-2010:0172

RHSA-2010_0126

Affected Products

Linux Kernel

Red Hat

References · 16

• https://nvd.nist.gov/vuln/detail/CVE-2009-3722 · Security Note
• http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.1 · Vendor Advisory
• http://mandriva.com/security/advisories?name=MDVSA-2010:198 · Vendor Advisory
• http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.9 · Vendor Advisory
• http://redhat.com/support/errata/RHSA-2010-0126.html · Vendor Advisory
• http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc1 · Vendor Advisory
• http://ubuntu.com/usn/usn-864-1 · Vendor Advisory
• http://marc.info/?l=oss-security&m=125680666827148&w=2 · Note
• https://access.redhat.com/security/cve/CVE-2009-3722 · Note
• http://securityfocus.com/bid/37221 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=531660 · Note
• https://access.redhat.com/errata/RHSA-2010:0126 · Note
• https://access.redhat.com/security/cve/CVE-2010-0419 · Note
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0a79b009525b160081d75cef5dbf45817956acf2 · Note
• http://marc.info/?l=oss-security&m=125678631403558&w=2 · Note