Ubuntu Security Notices
Developers issue an Ubuntu Security Notice when a security issue is fixed in an official Ubuntu package. You can find additional guidance for high-profile vulnerabilities in the Ubuntu Vulnerability Knowledge Base section.
To report a security vulnerability in an Ubuntu package, please contact the Security Team.
The Security Team also produces OVAL files for each Ubuntu release. These are an industry-standard machine-readable format dataset that contain details of all known security vulnerabilities and fixes relevant to the Ubuntu release, and can be used to determine whether a particular patch is appropriate. OVAL files can also be used to audit a system to check whether the latest security fixes have been applied.
Search USNs
USN ID, name, description or CVE ID contains
1 - 10 of 9719 results
1 August 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
31 July 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 14.04 LTS
CVE ID
CVE-2023-52975, CVE-2024-49883, CVE-2024-50073 + 2 others
31 July 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 16.04 LTS
CVE ID
CVE-2024-49883, CVE-2024-50073, CVE-2024-49950 + 2 others
31 July 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
31 July 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
31 July 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
31 July 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
31 July 2025
A security issue was fixed in the Linux kernel.
- Ubuntu 25.04
CVE ID
31 July 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 16.04 LTS
CVE ID
CVE-2024-49883, CVE-2024-50073, CVE-2024-49950 + 2 others
31 July 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS,
- 20.04 LTS
CVE ID
Resources
Join the discussion
Canonical is offering
Expanded Security Maintenance
Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.