CVE-2014-8086: Race condition in the ext4_file_write_iter function in fs/ext4/file.c in the Linux kernel through 3.17 allo...

Security readout for executives and security teams

CVE-2014-8086 is a Linux kernel ext4 filesystem race condition. A local user could trigger a denial of service affecting file availability by racing normal writes with a file-control flag change. The source bundle does not show remote exploitation, privilege escalation, or active exploitation evidence. Exposure is most relevant to older Linux systems using ext4 with kernels through 3.17, or vendor kernels carrying the affected code. The attacker needs local execution, so shared servers, hosting platforms, and systems running untrusted local workloads matter most. Treat as a maintenance-priority kernel update, higher for shared or multi-user Linux environments. It is not evidenced as internet-exploitable or actively exploited, but filesystem denial of service can disrupt business operations on affected hosts. Mitigation focus: Apply kernel updates from the relevant Linux distribution vendor.; Prioritize systems with ext4 filesystems and local untrusted users.; Check Red Hat or SUSE advisories if those distributions are in use..

Prepared

Jun 14, 2026, 13:53 UTC (UTC+00:00)

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