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 2361 results
5 March 2026
NSS could be made to crash or run programs if it received specially crafted network traffic.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
4 March 2026
Several security issues were fixed in ImageMagick.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-25968, CVE-2026-25898, CVE-2026-25986 + 4 others
4 March 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 14.04 LTS
CVE ID
CVE-2024-47659, CVE-2025-21704, CVE-2022-48875 + 6 others
3 March 2026
Several security issues were fixed in curl.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
25 February 2026
Several security issues were fixed in MongoDB.
- Ubuntu 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
24 February 2026
Several security issues were fixed in Ceph.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
24 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 14.04 LTS
CVE ID
12 February 2026
MUNGE could be made to crash or run programs as your login if it opened a specially crafted file.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
10 February 2026
Several security issues were fixed in Libtasn1.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
10 February 2026
Several security issues were fixed in GLib.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2025-7039, CVE-2025-3360, CVE-2025-13601 + 1 other
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