Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002453)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002453 advisory. 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...

UBUNTU-CVE-2015-4177

The collectmounts 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 MNTDETACH umount2 system...