CVE-2014-7975: The do_umount function in fs/namespace.c in the Linux kernel through 3.17 does not require the CAP_SYS_ADMI...

Security readout for executives and security teams

CVE-2014-7975 lets a local Linux user make the root filesystem read-only, disrupting normal writes and potentially breaking services. It is a denial-of-service issue, not a remote takeover based on the provided sources. Systems with untrusted local users deserve attention, especially older kernels or long-lived appliances. Exposure is most likely on Linux systems running kernels through 3.17 or downstream kernels before vendor backports. The attacker must be local, so shared servers, hosting environments, developer jump boxes, and systems with untrusted shell users are higher concern than isolated single-user hosts. Schedule remediation through normal kernel patching, with priority for shared or externally administered Linux systems. This is not described as remote code execution, but the business impact can be service disruption if a local user can force root storage read-only. Mitigation focus: Apply the relevant distribution kernel update from Ubuntu, Red Hat, or your Linux vendor.; Reboot into the updated kernel so the fixed code is running.; Verify the running kernel includes the upstream permission-check fix or vendor backport..

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.