Ubuntu has published a security advisory, highlighting a vulnerability in the following products listed below on the 19th of October 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.
Ubuntu 21.04
Ubuntu 20.04 LTS
For more information on these updates, you can follow these URLs:
https://ubuntu.com/security/notices?release=hirsute
https://ubuntu.com/security/notices?release=focal
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 (19th October 2021). Retrieved from Ubuntu
https://ubuntu.com/security/notices/USN-5113-1
Ubuntu security advisory (20th October 2021). Retrieved from Canadian Centre for Cyber Security.
https://www.cyber.gc.ca/en/alerts/ubuntu-security-advisory-27