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 10346 results
5 March 2026
Several security issues were fixed in Qt.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2020-13962, CVE-2023-51714, CVE-2024-39936 + 2 others
5 March 2026
less could be made to crash or run arbitrary commands if it received crafted input.
- Ubuntu 14.04 LTS
CVE ID
5 March 2026
Zutty could be made to execute arbitrary commands.
- Ubuntu 22.04 LTS
CVE ID
5 March 2026
Several security issues were fixed in Bleach.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2018-7753, CVE-2020-6817, CVE-2020-6802 + 2 others
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 GIMP.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2025-48798, CVE-2025-14422, CVE-2025-2760 + 2 others
4 March 2026
Several security issues were fixed in QEMU.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2026-0665, CVE-2025-14876, CVE-2025-11234 + 2 others
4 March 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-38476, CVE-2025-37875, CVE-2025-38023 + 750 others
4 March 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-37956, CVE-2025-37748, CVE-2025-38080 + 750 others
4 March 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 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.