Vulnerability: Bypassing Read-Only Restriction in Linux Kernel Bind Mounts

CVE-2014-5206 · HIGH Severity

AV:L/AC:L/AU:N/C:C/I:C/A:C

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.

Learn more about our Cis Benchmark Audit For Bind.