Privilege Escalation and Denial of Service Vulnerability in Linux Kernel

CVE-2014-5207 · MEDIUM Severity

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

fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a "mount -o remount" command within a user namespace.

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