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
2 - 11 of 10203 results
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 MySQL.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2026-21937, CVE-2026-21941, CVE-2026-21964 + 3 others
2 February 2026
libpng could be made to crash if it opened a specially crafted file.
- Ubuntu 24.04 LTS
CVE ID
2 February 2026
Inetutils could allow unintended access to network services.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
2 February 2026
Several security issues were fixed in Thunderbird.
- Ubuntu 22.04 LTS
CVE ID
CVE-2025-8031, CVE-2024-50336, CVE-2024-9403 + 108 others
30 January 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 20.04 LTS
CVE ID
30 January 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 20.04 LTS,
- 18.04 LTS
CVE ID
29 January 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS
CVE ID
CVE-2024-27078, CVE-2024-49959, CVE-2024-56606 + 4 others
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