A vulnerability in many Linux distributions, as well as Android and iOS, can allow an attacker to hijack VPN connections in some cases.
It took only a few days for a Linux worm to start exploiting the vulnerability in the Exim mail transfer agent. Microsoft said some Azure customers have already been affected.
A flaw in runC, the underlying container runtime for many platforms, can give an attacker root access to vulnerable hosts.
A vulnerability in the APT package manager in Debian and Ubuntu allows an attacker to install malicious packages in some circumstances.
A vulnerability in the X.org X Server software allows an authenticated attacker to gain root privileges and the ability to overwrite any files on a target system.