Ubuntu has published a security advisory, highlighting a vulnerability in the following products on the 11th of November 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.
Ubuntu 20.04 LTS
Ubuntu 18.04 LTS
Ubuntu 16.04 ESM
For more information on these updates, you can follow these URLs:
https://ubuntu.com/security/notices?release=focal
https://ubuntu.com/security/notices?release=bionic
https://ubuntu.com/security/notices?release=xenial
The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.
PDF Download: Ubuntu Security Advisory.pdf
References
Ubuntu security advisory (12th November 2021). Retrieved from Canadian Centre for Cyber Security.
Ubuntu security advisory (11th November 2021). Retrieved from Ubuntu.
https://ubuntu.com/security/notices