Design/Logic Flaw

The fspin implementation in the Linux kernel before 4.0.5 does not ensure the internal consistency of a certain list data structure, which allows local users to cause a denial of service system crash by leveraging user-namespace root access for an MNTDETACH umount2 system call, related to...

CVE-2015-4178

Technical details about CVE-2015-4178 are not publicly provided in the connected documents. The materials reference the vulnerability generally; monitor for updates from official advisories.

CVE-2014-9717: Improper Access Control

fs/namespace.c in the Linux kernel before 4.0.2 processes MNTDETACH umount2 system calls without verifying that the MNTLOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user...