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
81 - 90 of 280 results
28 October 2025
Netty could be made to send emails as your login if it received specially crafted input.
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
27 October 2025
Radare2 could be made to crash if it received specially crafted input.
- Ubuntu 25.10 ,
- 25.04
CVE ID
27 October 2025
strongSwan client could be made to crash or run programs if it received specially crafted network traffic.
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
23 October 2025
fetchmail could be made to crash if it received specially crafted network traffic.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
22 October 2025
Several security issues were fixed in Bind.
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
22 October 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.04 ,
- 24.04 LTS
CVE ID
CVE-2025-38424, CVE-2025-38389, CVE-2025-38251 + 169 others
21 October 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.04 ,
- 24.04 LTS
CVE ID
CVE-2025-38424, CVE-2025-38389, CVE-2025-38251 + 170 others
21 October 2025
Several security issues were fixed in Erlang.
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2025-48041, CVE-2025-48038, CVE-2025-48040 + 1 other
20 October 2025
Several security issues were fixed in Python LDAP.
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
16 October 2025
Several security issues were fixed in .NET
- Ubuntu 25.10 ,
- 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
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