CVE-2011-4110: Linux Kernel

Low severity, CVSS 2.1. EPSS: 0.5% chance of exploitation in the next 30 days.

The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows local users to cause a denial of service (NULL pointer dereference and kernel oops) via vectors related to a user-defined key and "updating a negative key into a fully instantiated key."

Affected products

• Linux Linux Kernel: version 2.6 only

Published 2012-01-27. Last modified 2026-06-16.