The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a "mount -o remount" command within a user namespace.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2014-08-18T10:00:00

Updated: 2024-08-06T11:41:47.763Z

Reserved: 2014-08-13T00:00:00

Link: CVE-2014-5206

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2014-08-18T11:15:27.107

Modified: 2024-11-21T02:11:37.413

Link: CVE-2014-5206

cve-icon Redhat

Severity : Important

Publid Date: 2014-08-01T00:00:00Z

Links: CVE-2014-5206 - Bugzilla