Right, this has been subject of countless debates, but it's not going to change at this point any more.
** Changed in: systemd (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1454057 Title: mounts are shared by default on ubuntu 15.04 Status in systemd package in Ubuntu: Won't Fix Bug description: Ubuntu 15.04: nir@reed:~$ grep '/ / ' /proc/self/mountinfo 21 0 8:5 / / rw,relatime shared:1 - ext4 /dev/disk/by-uuid/70f9850c-8ebd-4881-a504-e14ec8d37f66 rw,discard,errors=remount-ro,data=ordered Ubuntu 14.10: nir@pilgrim:~$ grep '/ / ' /proc/self/mountinfo 21 0 8:1 / / rw,relatime - ext4 /dev/disk/by-uuid/1d8ff8a8-6026-48dd-b6ce-e52b46c1f33d rw,errors=remount-ro,data=ordered This breaks CLONE_NEWNS and may present a security threat since process' private mounts are viewable to all and will persist after the process exits. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1454057/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp