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
101 - 110 of 2305 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
Libxslt could be made to crash or run programs if it opened a specially crafted file.
- Ubuntu 24.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 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
Libxslt could be made to crash or run programs if it opened a specially crafted file.
- Ubuntu 24.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 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
18 March 2025
Several security issues were fixed in RestrictedPython.
- Ubuntu 24.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS
CVE ID
CVE-2023-37271, CVE-2024-47532, CVE-2023-41039 + 1 other
17 March 2025
djoser could be made to bypass authentication checks during login.
- Ubuntu 24.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 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
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