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CVE-2011-2184

7.2 · HIGH

The key_replace_session_keyring function in security/keys/process_keys.c in the Linux kernel before 2.6.39.1 does not initialize a certain structure member, which allows local users to cause a deni…

Published Sep 6, 2011linuxCWE-476EPSS 0.38%

Overview

CVE-2011-2184 is a high-severity vulnerability affecting linux linux_kernel. It was published on September 6, 2011 and has a CVSS 2.0 base score of 7.2 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The key_replace_session_keyring function in security/keys/process_keys.c in the Linux kernel before 2.6.39.1 does not initialize a certain structure member, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a KEYCTL_SESSION_TO_PARENT argument to the keyctl function, a different vulnerability than CVE-2010-2960.

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_kernel>= 0, < 2.6.39.1Affected

References

Refalt.swiecki.net/linux_kernel/sys_open-kmem_cache_alloc-2.6.39-rc4.txtRefgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f7285b5d631fd6096b11c6af0058ed3a2b30ef4eRefsecurityreason.com/securityalert/8371Refwww.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.1Refwww.openwall.com/lists/oss-security/2011/06/03/2Refwww.openwall.com/lists/oss-security/2011/06/06/2Reflkml.org/lkml/2011/5/23/199Reflkml.org/lkml/2011/5/24/502Reflkml.org/lkml/2011/5/25/265Refalt.swiecki.net/linux_kernel/sys_open-kmem_cache_alloc-2.6.39-rc4.txt

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2184?

CVE-2011-2184 is a high-severity vulnerability affecting linux linux_kernel. It was published on September 6, 2011 and has a CVSS 2.0 base score of 7.2 (HIGH).

How severe is CVE-2011-2184?

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. 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-2011-2184?

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-2011-2184?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2184 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.

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