Design/Logic Flaw

fusermount in fuse 2.8.5 and earlier does not perform a chdir to / before performing a mount or umount, which allows local users to unmount arbitrary directories via unspecified vectors...

Command injection

usb-creator-helper in usb-creator before 0.2.28.3 does not enforce intended PolicyKit restrictions, which allows local users to perform arbitrary unmount operations via the UnmountFile method in a dbus-send command...