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 2385 results
22 April 2026
Slurm could be made to send data to an arbitrary unix socket on the host.
- Ubuntu 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
21 April 2026
Apache Commons IO could be made to crash if it received specially crafted input.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
17 April 2026
Several security issues were fixed in Rack.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-26962, CVE-2026-34827, CVE-2026-26961 + 10 others
15 April 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS,
- 14.04 LTS
CVE ID
CVE-2025-37849, CVE-2026-23060, CVE-2026-23074 + 2 others
14 April 2026
rustc could be made to modify permissions on arbitrary directories.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
13 April 2026
Several security issues were fixed in Vim.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
9 April 2026
Several security issues were fixed in OpenSSL.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-28387, CVE-2026-28389, CVE-2026-28388 + 1 other
9 April 2026
Several security issues were fixed in Django.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
7 April 2026
Several security issues were fixed in Salt.
- Ubuntu 14.04 LTS
CVE ID
2 April 2026
Several security issues were fixed in libarchive.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2025-5916, CVE-2019-19221, CVE-2025-5914 + 6 others
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