Ref# ADV2025_403 | Date: Dec 4th 2025

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Ubuntu published a security advisory highlighting vulnerabilities in the following products between November 24th and 30th, 2025. It is recommended that you take these necessary precautions by ensuring your products are always updated. 

• Ubuntu 22.04 LTS 
• Ubuntu 24.04 LTS 

For more information on these updates, you can follow these URLs: 

1. https://ubuntu.com/security/notices/USN-7889-1 (USN-7889-1: Linux kernel vulnerabilities) 
2. https://ubuntu.com/security/notices/USN-7887-2 (USN-7887-2: Linux kernel (Raspberry Pi) vulnerabilities) 
3. https://ubuntu.com/security/notices/USN-7889-3 (USN-7889-3: Linux kernel (Real-time) vulnerabilities) 
4. https://ubuntu.com/security/notices/USN-7889-2 (USN-7889-2: Linux kernel (FIPS) vulnerabilities) 
5. https://ubuntu.com/security/notices/USN-7879-3 (USN-7879-3: Linux kernel vulnerabilities) 

The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.

PDF Download: Ubuntu Security Advisory

References 

• Ubuntu Security Notices. (November 24th and 30th, 2025). Retrieved from Ubuntu. https://ubuntu.com/security/notices 
• Ubuntu security advisory (December 1st, 2025). Retrieved from Canadian Centre for Cyber Security. https://www.cyber.gc.ca/en/alerts-advisories/ubuntu-security-advisory-av25-792