CVE-2015-4178: The fs_pin implementation in the Linux kernel before 4.0.5 does not ensure the internal consistency of a ce...

Security readout for executives and security teams

CVE-2015-4178 is a Linux kernel local denial-of-service flaw. A local user with user-namespace root privileges could trigger a kernel panic, crashing the system. It does not describe remote access or data theft, but availability impact can matter on shared hosts and container platforms. Exposure is mainly Linux systems running vulnerable pre-4.0.5 kernels or vendor kernels without the upstream/backported fix, especially where untrusted local users or containerized workloads can obtain user-namespace root privileges. Treat as a reliability and shared-host risk. Patch during normal security maintenance, with higher urgency for multi-user or container-hosting infrastructure where a local tenant could crash a system. Mitigation focus: Upgrade to Linux 4.0.5 or a vendor kernel containing the upstream fix.; Check distribution advisories for backported fixes before assuming version numbers are sufficient.; Prioritize shared systems, multi-tenant hosts, and container environments with untrusted workloads..

Prepared

Jun 13, 2026, 14:44 UTC (UTC+00:00)

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