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...

PT-2016-3621

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.0.5 Description The issue is related to the fs pin implementation in the Linux kernel, which does not ensure the internal consistency of a certain list data structure. This allows local users with user-namespac...

PT-2016-3620

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.0.5 Description The issue is related to the collect mounts function in fs/namespace.c, which does not properly handle the case when it executes after a path has been unmounted. This allows local users with...