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
10 - 19 of 150 results
24 February 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.10
CVE ID
CVE-2025-40175, CVE-2025-40269, CVE-2025-68180 + 364 others
24 February 2026
Several security issues were fixed in rlottie.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS
CVE ID
23 February 2026
Evolution Data Server could be made to remove files.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
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
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
17 February 2026
Nova could be made to destroy data.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
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
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