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
69 - 78 of 10346 results
17 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2025-68242, CVE-2025-40153, CVE-2025-40118 + 363 others
17 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 + 112 others
17 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
17 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
17 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 + 750 others
17 February 2026
Pillow could be made to crash or run programs if it opened a specially crafted file.
- Ubuntu 25.10
CVE ID
17 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
17 February 2026
Several security issues were fixed in FRR.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-61104, CVE-2025-61102, CVE-2025-61103 + 6 others
16 February 2026
alsa-lib 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
16 February 2026
Several security issues were fixed in GnuTLS.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
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