CVE-2013-1957: The clone_mnt function in fs/namespace.c in the Linux kernel before 3.8.6 does not properly restrict change...

Security readout for executives and security teams

This Linux kernel flaw could let a local user defeat a filesystem's intended read-only setting by using a separate mount namespace. The business risk is mainly integrity: files expected to be protected as read-only may be altered if an affected kernel is present and local access exists. Exposure is most likely on systems running Linux kernels before 3.8.6 or vendor kernels missing the upstream fix. Risk depends on whether local users can create or use separate mount namespaces. The provided sources do not identify specific distributions or appliances. Prioritize remediation on multi-user Linux systems, shared hosting, build workers, and container hosts. The issue is old and locally scoped, but it can undermine read-only filesystem controls that may support containment or operational safeguards. Mitigation focus: Update affected Linux kernels to 3.8.6 or a vendor build containing the fix.; Verify vendor advisories for backported fixes if kernel version numbers differ.; Restrict untrusted local access where affected kernels cannot be updated promptly..

Prepared

Jun 14, 2026, 22:07 UTC (UTC+00:00)

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