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
5 - 14 of 10125 results
15 December 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-39964, CVE-2025-39946, CVE-2025-40172 + 3 others
15 December 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.10
CVE ID
15 December 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.04 ,
- 24.04 LTS
CVE ID
CVE-2025-38566, CVE-2025-38448, CVE-2025-38625 + 202 others
15 December 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
CVE-2024-53068, CVE-2025-38695, CVE-2025-38502 + 175 others
15 December 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
CVE-2024-53068, CVE-2025-38695, CVE-2025-38502 + 183 others
15 December 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-39964, CVE-2025-38666, CVE-2025-40018 + 2 others
15 December 2025
libsoup could be made to crash if it received specially crafted network traffic.
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
15 December 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-40018, CVE-2025-37958, CVE-2025-39993 + 2 others
15 December 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-39993, CVE-2025-39964, CVE-2025-40018 + 2 others
15 December 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 16.04 LTS
CVE ID
CVE-2024-50179, CVE-2021-47634, CVE-2024-50067 + 15 others
Resources
Join the discussion
Canonical is offering
Expanded Security Maintenance
Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.