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 10852 results
25 June 2026
Several security issues were fixed in containerd.
- Ubuntu 26.04 LTS,
- 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS
CVE ID
CVE-2026-53492, CVE-2026-53489, CVE-2026-47262 + 3 others
25 June 2026
Several security issues were fixed in containerd.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
25 June 2026
Several security issues were fixed in containerd.
- Ubuntu 26.04 LTS,
- 25.10
CVE ID
CVE-2026-47262, CVE-2026-53489, CVE-2026-53488 + 3 others
25 June 2026
NSD could be made to crash or run programs if it received specially crafted network traffic.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2026-12490, CVE-2026-12245, CVE-2026-12244 + 1 other
25 June 2026
cpp-httplib could mishandle HTTP requests if it received specially crafted network traffic.
- Ubuntu 26.04 LTS,
- 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
24 June 2026
Several security issues were fixed in ImageMagick.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-28691, CVE-2026-27798, CVE-2026-28692 + 3 others
24 June 2026
Several security issues were fixed in FFmpeg.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS
CVE ID
24 June 2026
Several security issues were fixed in Perl.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
24 June 2026
Several security issues were fixed in Perl DBI module.
- Ubuntu 26.04 LTS,
- 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
24 June 2026
Several security issues were fixed in MySQL.
- Ubuntu 20.04 LTS
CVE ID
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