Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2009-0031

4.9 · MEDIUM

Memory leak in the keyctl_join_session_keyring function (security/keys/keyctl.c) in Linux kernel 2.6.29-rc2 and earlier allows local users to cause a denial of service (kernel memory consumption) v…

Published Jan 21, 2009linuxCWE-399EPSS 0.41%

Overview

CVE-2009-0031 is a medium-severity vulnerability affecting linux linux_kernel. It was published on January 21, 2009 and has a CVSS 2.0 base score of 4.9 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Memory leak in the keyctl_join_session_keyring function (security/keys/keyctl.c) in Linux kernel 2.6.29-rc2 and earlier allows local users to cause a denial of service (kernel memory consumption) via unknown vectors related to a "missing kfree."

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel0Affected

References

Refgit2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0d54ee1c7850a954026deec4cd4885f331da35ccReflists.opensuse.org/opensuse-security-announce/2009-02/msg00003.htmlRefosvdb.org/51501Refrhn.redhat.com/errata/RHSA-2009-0264.htmlRefsecunia.com/advisories/33858Refsecunia.com/advisories/34252Refsecunia.com/advisories/34394Refsecunia.com/advisories/34502Refsecunia.com/advisories/34762Refsecunia.com/advisories/34981

How CyberStrike helps

Frequently asked questions

What is CVE-2009-0031?

CVE-2009-0031 is a medium-severity vulnerability affecting linux linux_kernel. It was published on January 21, 2009 and has a CVSS 2.0 base score of 4.9 (MEDIUM).

How severe is CVE-2009-0031?

This vulnerability has a CVSS 2.0 base score of 4.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-0031?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-0031?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-0031 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2009

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999