Every major Linux distro has a PwnKit flaw that is easily exploited to gain root access
Linux-based operating systems are frequently touted as being far more secure than the likes of Windows or macOS. More secure they may be, but they are not completely infallible.
A great example of this is the recently discovered PwnKit vulnerability in the pkexec component of Polkit. The flaw can be exploited to gain root access to a system and it has been a security hole in pretty much all major Linux distros for over 12 years, including Debian, Fedora and Ubuntu.