CVE-2011-4110

Name of the Vulnerable Software and Affected Versions Linux kernel version 2.6

Description The issue is related to the user update function in the Linux kernel, which allows local users to cause a denial of service. This can be achieved through vectors related to a user-defined key and updating a negative key into a fully instantiated key, resulting in a NULL pointer dereference and kernel oops.

Recommendations For Linux kernel version 2.6, as a temporary workaround, consider disabling the user update function until a patch is available. Restrict access to the security/keys/user defined.c module to minimize the risk of exploitation. Avoid using the user defined key in the affected kernel version until the issue is resolved.