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
21 - 30 of 1688 results
28 July 2025
poppler could be made to crash or run programs if it opened a specially crafted file.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
28 July 2025
Several security issues were fixed in OpenJDK 11.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2025-30749, CVE-2025-50059, CVE-2025-50106 + 2 others
24 July 2025
iputils could be made to consume resources and crash if it received specially crafted network traffic.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
24 July 2025
Several security issues were fixed in OpenJDK 21.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS
CVE ID
CVE-2025-50106, CVE-2025-30754, CVE-2025-50059 + 1 other
24 July 2025
Several security issues were fixed in OpenJDK 8.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2025-30749, CVE-2025-50106, CVE-2025-30754 + 1 other
22 July 2025
The Unbound cache could be poisoned if it received specially crafted network traffic.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
22 July 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-21804, CVE-2025-21799, CVE-2024-57982 + 114 others
22 July 2025
Several security issues were fixed in Sinatra.
- Ubuntu 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
22 July 2025
Several security issues were fixed in Thunderbird.
- Ubuntu 22.04 LTS
CVE ID
CVE-2025-4083, CVE-2025-4918, CVE-2025-1010 + 49 others
22 July 2025
Several security issues were fixed in GDK-PixBuf.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
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