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CVE-2011-4081

5.5 · MEDIUM

crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a f…

Published May 24, 2012linuxCWE-476EPSS 0.45%

Overview

CVE-2011-4081 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 24, 2012 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a failed or missing ghash_setkey function call, followed by a (1) ghash_update function call or (2) ghash_final function call, as demonstrated by a write operation on an AF_ALG socket.

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, < 3.1Affected

References

Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ed47b7d142ec99ad6880bbbec51e9f12b3af74cRefwww.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1Refwww.openwall.com/lists/oss-security/2011/10/27/2Refbugzilla.redhat.com/show_bug.cgi?id=749475GitHubgithub.com/torvalds/linux/commit/7ed47b7d142ec99ad6880bbbec51e9f12b3af74cRefgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ed47b7d142ec99ad6880bbbec51e9f12b3af74cRefwww.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1Refwww.openwall.com/lists/oss-security/2011/10/27/2Refbugzilla.redhat.com/show_bug.cgi?id=749475GitHubgithub.com/torvalds/linux/commit/7ed47b7d142ec99ad6880bbbec51e9f12b3af74c

How CyberStrike helps

Frequently asked questions

What is CVE-2011-4081?

CVE-2011-4081 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 24, 2012 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2011-4081?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2011-4081?

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-2011-4081?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-4081 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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