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 10030 results
21 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-38493, CVE-2025-38510, CVE-2025-38665 + 194 others
21 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
21 November 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 + 197 others
20 November 2025
ImageMagick could be made to crash or run programs as your login if it opened a specially crafted file.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
20 November 2025
Several security issues were fixed in cups-filters.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
20 November 2025
Several security issues were fixed in libcupsfilters.
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS
CVE ID
19 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
CVE-2025-40300, CVE-2025-37838, CVE-2025-38118 + 1 other
19 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 16.04 LTS
CVE ID
CVE-2023-52650, CVE-2024-50006, CVE-2024-53150 + 25 others
19 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 20.04 LTS
CVE ID
CVE-2025-38352, CVE-2025-40300, CVE-2025-21727 + 5 others
19 November 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2023-52854, CVE-2024-50061, CVE-2025-37838 + 5 others
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