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
331 - 340 of 2767 results
24 March 2025
Several security issues were fixed in NLTK.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
21 March 2025
OpenSAML and OpenSAML2 could have their authentication systems bypassed.
- Ubuntu 25.04 ,
- 24.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
20 March 2025
PAM-PKCS#11 could be used to bypass authentication.
- Ubuntu 24.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
20 March 2025
Several security issues were fixed in Alpine.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
19 March 2025
Several security issues were fixed in uriparser.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
17 March 2025
Several security issues were fixed in FreeType.
- Ubuntu 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
17 March 2025
PlantUML could be made to crash or run programs as your login if it opened a specially crafted UML file.
- Ubuntu 24.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
17 March 2025
Several security issues were fixed in X.Org X Server.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2025-26598, CVE-2025-26597, CVE-2025-26600 + 5 others
13 March 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2024-43893, CVE-2024-26685, CVE-2025-0927 + 36 others
12 March 2025
USN-7343-1 introduced a regression in Jinja2.
- Ubuntu 20.04 LTS,
- 18.04 LTS
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