Ubuntu has published a security advisory, highlighting vulnerabilities in multiple products on 24th June, 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.
For more information on these Ubuntu updates you can follow this URL:
https://ubuntu.com/security/notices/USN-5004-1
The Guyana National CIRT recommends that users and administrators review this update and apply it where necessary.
PDF Download: Ubuntu Releases Security Updates for Multiple Product.pdf
References
https://cyber.gc.ca/en/alerts/ubuntu-security-advisory-15