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
3 - 12 of 10214 results
3 February 2026
Several security issues were fixed in GNU C Library.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2026-0861, CVE-2026-0915, CVE-2025-15281 + 1 other
3 February 2026
Several security issues were fixed in FreeRDP.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2026-23533, CVE-2026-23531, CVE-2026-23534 + 2 others
3 February 2026
Several security issues were fixed in OpenJDK 17.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2026-21945, CVE-2026-21932, CVE-2026-21925 + 1 other
2 February 2026
Several security issues were fixed in CRaC JDK 21.
- Ubuntu 25.10
CVE ID
CVE-2026-21932, CVE-2026-21925, CVE-2026-21945 + 1 other
2 February 2026
Several security issues were fixed in OpenJDK 21.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS
CVE ID
CVE-2026-21925, CVE-2026-21933, CVE-2026-21932 + 1 other
2 February 2026
Several security issues were fixed in OpenJDK 11.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2026-21925, CVE-2026-21933, CVE-2026-21932 + 1 other
2 February 2026
Several security issues were fixed in OpenJDK 8.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2026-21932, CVE-2026-21925, CVE-2026-21945 + 1 other
2 February 2026
Several security issues were fixed in Filelock.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
2 February 2026
Several security issues were fixed in CRaC JDK 17.
- Ubuntu 25.10
CVE ID
CVE-2026-21945, CVE-2026-21932, CVE-2026-21925 + 1 other
2 February 2026
Several security issues were fixed in CRaC JDK 25.
- Ubuntu 25.10
CVE ID
CVE-2026-21932, CVE-2026-21933, CVE-2026-21945 + 1 other
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