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 11190 results
7 September 2026
MiniUPnPd could be made to crash or expose sensitive information if it received specially crafted network traffic.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
7 September 2026
A security issue was fixed in the Linux kernel.
- Ubuntu 22.04 LTS,
- 20.04 LTS
CVE ID
7 September 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2026-64182, CVE-2026-64127, CVE-2026-64097 + 94 others
7 September 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2026-52938, CVE-2026-63881, CVE-2026-63896 + 1414 others
7 September 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 26.04 LTS
CVE ID
CVE-2026-63869, CVE-2026-64493, CVE-2026-64244 + 544 others
7 September 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 26.04 LTS,
- 24.04 LTS
CVE ID
CVE-2026-64504, CVE-2026-64244, CVE-2026-52938 + 548 others
4 September 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2026-53246, CVE-2026-53225, CVE-2026-53043 + 2 others
4 September 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-53045, CVE-2026-52914, CVE-2022-50401 + 5 others
3 September 2026
Several security issues were fixed in rabbitmq-c.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-59986, CVE-2026-61547, CVE-2023-35789 + 2 others
3 September 2026
GnuPG could allow encrypted messages to be forged under certain circumstances.
- Ubuntu 26.04 LTS,
- 24.04 LTS
CVE ID
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