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
1 - 10 of 2648 results
24 October 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS
CVE ID
CVE-2025-38617, CVE-2025-21796, CVE-2025-37785 + 2 others
23 October 2025
Go Cryptography could allow unintended access to network services.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
21 October 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS
CVE ID
CVE-2023-52975, CVE-2025-38350, CVE-2025-37752 + 7 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
21 October 2025
Several security issues were fixed in FFmpeg.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2023-6603, CVE-2025-9951, CVE-2023-6605 + 2 others
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
20 October 2025
Several security issues were fixed in Samba.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
20 October 2025
Several security issues were fixed in GStreamer Base Plugins.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
16 October 2025
Apache Subversion could be made to crash if it opened a specially crafted file.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
16 October 2025
Several security issues were fixed in MuPDF.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2018-16647, CVE-2018-10289, CVE-2018-1000036 + 5 others
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