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
13 - 22 of 780 results
27 November 2025
Several security issues were fixed in WebKitGTK.
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
26 November 2025
Several security issues were fixed in EDK II.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2023-45236, CVE-2024-2511, CVE-2024-38805 + 27 others
26 November 2025
Several security issues were fixed in Valkey.
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS
CVE ID
CVE-2025-46818, CVE-2025-49112, CVE-2025-49844 + 2 others
26 November 2025
Several security issues were fixed in rust-openssl.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS
CVE ID
26 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-38227, CVE-2025-38678, CVE-2025-21729 + 1 other
26 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-38227, CVE-2025-38678, CVE-2025-21729 + 1 other
26 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-38566, CVE-2025-38448, CVE-2025-38625 + 197 others
25 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-38616, CVE-2025-38678, CVE-2025-21729 + 1 other
25 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-38152, CVE-2025-22086, CVE-2025-22021 + 57 others
25 November 2025
Several security issues were fixed in MuPDF.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2023-51106, CVE-2023-51104, CVE-2025-46206 + 3 others
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