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 3081 results
28 September 2026
Several security issues were fixed in Atril.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
28 September 2026
Several security issues were fixed in catdoc.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
28 September 2026
pdfminer could be made to run programs as your login if it opened a specially crafted file.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
28 September 2026
Booth could allow unintended access to network services.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
28 September 2026
Several security issues were fixed in phpseclib.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
28 September 2026
Several security issues were fixed in dracut.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2016-8637, CVE-2026-15816, CVE-2026-16445 + 1 other
28 September 2026
Several security issues were fixed in Erlang.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-23941, CVE-2026-59250, CVE-2026-74835 + 16 others
28 September 2026
Several security issues were fixed in LXC.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
25 September 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
25 September 2026
Applications using libpcap could be made to crash if given specially crafted data.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
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