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.
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USN ID, name, description or CVE ID contains
1 - 10 of 238 results
7 May 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.10
CVE ID
CVE-2025-68781, CVE-2025-68778, CVE-2025-71116 + 138 others
7 May 2026
Postfix could be made to crash if it received specially crafted network traffic.
- Ubuntu 26.04 LTS,
- 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
7 May 2026
OpenJPEG could be made to crash or run programs when encoding image files.
- Ubuntu 26.04 LTS,
- 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
7 May 2026
Several security issues were fixed in libpng.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
7 May 2026
Little CMS could be made to crash if it opened a specially crafted ICC profile.
- Ubuntu 26.04 LTS,
- 25.10
CVE ID
7 May 2026
dpkg could be made to stop responding if it opened a specially crafted file.
- Ubuntu 25.10 ,
- 24.04 LTS
CVE ID
7 May 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.10 ,
- 24.04 LTS
CVE ID
CVE-2025-71149, CVE-2025-71084, CVE-2025-71131 + 137 others
7 May 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 25.10 ,
- 24.04 LTS
CVE ID
6 May 2026
Several security issues were fixed in Apache HTTP Server.
- Ubuntu 26.04 LTS,
- 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2026-28780, CVE-2026-33523, CVE-2026-33857 + 8 others
6 May 2026
EditorConfig could be made to crash if it opened a specially crafted file.
- Ubuntu 26.04 LTS,
- 25.10 ,
- 24.04 LTS
CVE ID
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