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 11605 results
12 November 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
CVE-2026-97981, CVE-2026-98290, CVE-2026-68329 + 3610 others
12 November 2026
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS
CVE ID
CVE-2026-98982, CVE-2026-98764, CVE-2026-98726 + 376 others
11 November 2026
Yodl could be made to crash if it opened a specially crafted file.
- Ubuntu 16.04 LTS
CVE ID
11 November 2026
SNMPTT could be made to run programs if it received specially crafted network traffic.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
11 November 2026
kramdown could be made to expose sensitive information or run programs if it opened a specially crafted file.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
11 November 2026
ruby-jwt could allow unintended access to network services.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
11 November 2026
Action Pack Page Caching could be made to overwrite files if it received specially crafted network traffic.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
11 November 2026
rkhunter could be made to run programs if it received specially crafted network traffic.
- Ubuntu 16.04 LTS
CVE ID
11 November 2026
Prosody Community Modules could be made to grant administrator privileges to an attacker.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
11 November 2026
pecl_http could be made to crash or run programs if it received specially crafted network traffic.
- Ubuntu 16.04 LTS
CVE ID
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