Linux/Ubuntu Security Updates – February/March 2022

Two serious security vulnerabilities, CVE-2021-4034 and CVE-2021-44731, have been announced recently. Both vulnerabilities, which affect most Linux-based systems including Ubuntu, potentially allow attackers to gain root privileges and take full control of an unprotected system.

Patches are already available for both vulnerabilities, so please, if you have an IST computer running Ubuntu, make sure that your system is up to date. One of the easiest ways to do this is to make sure that you are connected to the Internet, then open a terminal window and run the commands:

Finally, reboot your system to make sure that all newly-installed patches are properly applied.

sudo apt update
sudo apt upgrade -y

Users of other Linux-based distributions are encouraged to take similar steps with their system’s package manager: if you are in any doubt about how to update your system, you are welcome to contact IT Support for assistance.

UPDATE: in March a new flaw was discovered (CVE-2022-25636) in the linux kernel. Please update your systems on a regular basis.