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
3 - 12 of 10244 results
11 February 2026
Several security issues were fixed in Python-Multipart.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
11 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-38702, CVE-2025-38351, CVE-2025-39694 + 750 others
11 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS
CVE ID
CVE-2024-50195, CVE-2022-48986, CVE-2024-56756 + 4 others
11 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 20.04 LTS
CVE ID
11 February 2026
Several security issues were fixed in the xmltok library.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 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
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
10 February 2026
ImageMagick could be made to crash or run programs as your login if it opened a specially crafted file.
- Ubuntu 24.04 LTS,
- 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
Resources
Join the discussion
Canonical is offering
Expanded Security Maintenance
Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.