Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2009-2406

6.9 · MEDIUM

Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel before 2.6.30.4 allows local users to cause a denial of servi…

Published Jul 31, 2009linuxCWE-119EPSS 0.50%

Overview

CVE-2009-2406 is a medium-severity vulnerability affecting linux kernel. It was published on July 31, 2009 and has a CVSS 2.0 base score of 6.9 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel before 2.6.30.4 allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving a crafted eCryptfs file, related to not ensuring that the key signature length in a Tag 11 packet is compatible with the key signature buffer size.

Remediation

Check the references section for vendor advisories and patches from linux. Update 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

Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6352a29305373ae6196491e6d4669f301e26492eReflists.opensuse.org/opensuse-security-announce/2009-09/msg00001.htmlRefrisesecurity.org/advisories/RISE-2009002.txtRefsecunia.com/advisories/35985Refsecunia.com/advisories/36045Refsecunia.com/advisories/36051Refsecunia.com/advisories/36054Refsecunia.com/advisories/36116Refsecunia.com/advisories/36131Refsecunia.com/advisories/37471

How CyberStrike helps

Frequently asked questions

What is CVE-2009-2406?

CVE-2009-2406 is a medium-severity vulnerability affecting linux kernel. It was published on July 31, 2009 and has a CVSS 2.0 base score of 6.9 (MEDIUM).

How severe is CVE-2009-2406?

This vulnerability has a CVSS 2.0 base score of 6.9, 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-2009-2406?

Check the references section for vendor advisories and patches from linux. Update 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-2009-2406?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-2406 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