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 2005 results
23 February 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-2017-17785, CVE-2025-10922, CVE-2025-14425 + 2 others
23 February 2026
Several security issues were fixed in U-Boot.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2024-57257, CVE-2024-57256, CVE-2024-57254 + 3 others
23 February 2026
Evolution Data Server could be made to remove files.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
23 February 2026
Several security issues were fixed in DjVuLibre.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
19 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
CVE-2025-40154, CVE-2025-40121, CVE-2025-40109 + 111 others
19 February 2026
libvpx could be made to crash or run programs if it opened a specially crafted file.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
19 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS,
- 20.04 LTS
CVE ID
CVE-2025-40153, CVE-2025-40118, CVE-2025-39971 + 111 others
19 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
CVE-2025-38702, CVE-2025-38351, CVE-2025-39694 + 750 others
18 February 2026
trafficserver could be made to crash if it received specially crafted input.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
18 February 2026
Several security issues were fixed in libssh.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2026-0965, CVE-2026-0964, CVE-2026-0967 + 3 others
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