Ubuntu Security Notices
Developers issue an Ubuntu Security Notice when a security issue is fixed in anofficial Ubuntu package. You can find additional guidance for high-profile vulnerabilities in theUbuntu Vulnerability Knowledge Base section.
To report a security vulnerability in an Ubuntu package, pleasecontact the Security Team.
The Security Team also producesOVAL 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 10293 results
20 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 20.04 LTS,
- 18.04 LTS
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 speciallycrafted 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 24.04 LTS
CVE ID
CVE-2025-38702,CVE-2025-38351,CVE-2025-39694 + 750 others
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 24.04 LTS
CVE ID
CVE-2025-38702,CVE-2025-38351,CVE-2025-39694 + 753 others
19 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-38014,CVE-2025-37840,CVE-2025-39694 + 749 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
Inetutils could allow unintended access to network services.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
18 February 2026
trafficserver could be made to crash if it received specially craftedinput.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
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