Denial of Service Vulnerability in Linux Kernel's collect_mounts Function

CVE-2015-4177 · MEDIUM Severity

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

The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call.

Learn more about our Cis Benchmark Audit For Distribution Independent Linux.