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
31 - 40 of 152 results
12 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.10
CVE ID
CVE-2025-68242, CVE-2025-40153, CVE-2025-40118 + 363 others
12 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.10
CVE ID
CVE-2025-40304, CVE-2025-40031, CVE-2025-68185 + 364 others
11 February 2026
.NET could be made to bypass security features.
- Ubuntu 25.10 ,
- 22.04 LTS
CVE ID
10 February 2026
Several security issues were fixed in Expat.
- Ubuntu 25.10 ,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
8 February 2026
Several security issues were fixed in libsoup.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
5 February 2026
Several security issues were fixed in Python.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2025-15366, CVE-2025-15367, CVE-2025-13837 + 5 others
5 February 2026
tracker-miners 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
CVE ID
CVE-2026-1764, CVE-2026-1767, CVE-2026-1766 + 1 other
5 February 2026
Several security issues were fixed in GLib.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
4 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.10 ,
- 24.04 LTS
CVE ID
3 February 2026
Several security issues were fixed in Django.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-1312, CVE-2026-1287, CVE-2026-1207 + 3 others
Resources
Join the discussion
Get up to 15 years of security
maintenance for your new or established systems
Get up to 15 years of security maintenance for your entire Ubuntu Archive. Keep your systems stable with security backporting and avoid forced upgrades.