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 2498 results
30 April 2025
H2O could be made to crash if it received specially crafted network traffic.
- Ubuntu 18.04 LTS
CVE ID
29 April 2025
poppler could be made to treat documents with forged signatures as legitimately signed.
- Ubuntu 25.04 ,
- 24.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
29 April 2025
Several security issues were fixed in GNU binutils.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
29 April 2025
Node.js could be made to crash if it received specially crafted network traffic.
- Ubuntu 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
28 April 2025
Several security issues were fixed in libxml2.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
28 April 2025
Apache Tomcat could be made to crash if it received specially crafted network traffic.
- Ubuntu 18.04 LTS
CVE ID
28 April 2025
Several security issues were fixed in Mistral.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
28 April 2025
KiCad could be made to crash or run programs if it opened a specially crafted file.
- Ubuntu 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2022-23803, CVE-2022-23946, CVE-2022-23947 + 1 other
24 April 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS
CVE ID
CVE-2024-53237, CVE-2024-56633, CVE-2024-35958 + 164 others
24 April 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2024-26928, CVE-2024-26915, CVE-2025-21700 + 11 others
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