CVE-2011-4110: The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows local users to caus...

Security readout for executives and security teams

CVE-2011-4110 is a local denial-of-service issue in the Linux kernel 2.6 key management code. A local user could trigger a NULL pointer dereference and kernel oops, potentially disrupting the affected system. It is not described as remote code execution, and the supplied sources do not show active exploitation. Exposure is most likely on legacy Linux 2.6 systems, especially shared servers or environments where untrusted local users have accounts. Systems that received vendor kernel updates from the referenced advisories are likely remediated, but the bundle does not provide exact fixed package versions. Treat this as a legacy-platform stability risk, not an internet-facing emergency based on supplied evidence. Prioritize remediation where multi-user access exists or old kernels remain in production. If all systems run supported, patched kernels, urgency is lower. Mitigation focus: Apply vendor kernel updates referenced by your Linux distribution.; Prioritize shared hosts with untrusted or semi-trusted local users.; Check Ubuntu, Red Hat, or vendor advisories for fixed kernel packages..

Prepared

Jun 27, 2026, 17:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.