USN-5141-1: Firejail vulnerability

USN-5141-1: Firejail vulnerability

Roman Fiedler discovered that a race condition existed in Firejail
when using OverlayFS to prevent writes to the underlying file system. A
local attacker could use this to gain administrative privileges. Note:
this update disables support for OverlayFS in Firejail.
Source: USN-5141-1: Firejail vulnerability