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 9580 results
26 June 2025
pip could be made to expose sensitive information over the network.
- Ubuntu 25.04 ,
- 24.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
26 June 2025
libxslt could be made to expose sensitive information.
- Ubuntu 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
26 June 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
CVE-2024-58086, CVE-2025-21785, CVE-2024-46753 + 193 others
26 June 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.04
CVE ID
CVE-2025-23131, CVE-2025-23137, CVE-2025-37859 + 329 others
26 June 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-21699, CVE-2025-21672, CVE-2025-21682 + 30 others
26 June 2025
Several security issues were fixed in libarchive.
- Ubuntu 25.04 ,
- 24.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-5915, CVE-2025-5916, CVE-2025-5917 + 1 other
25 June 2025
urllib3 could be made to expose sensitive information over the network.
- Ubuntu 25.04 ,
- 24.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
25 June 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2024-57948, CVE-2025-21943, CVE-2025-21694 + 30 others
25 June 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-21699, CVE-2025-21672, CVE-2025-21682 + 29 others
25 June 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS
CVE ID
CVE-2024-56551, CVE-2025-21993, CVE-2025-22045 + 29 others
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