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
131 - 140 of 2886 results
29 August 2025
Several security issues were fixed in Python.
- Ubuntu 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
28 August 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 16.04 LTS
CVE ID
CVE-2021-47345, CVE-2025-37752, CVE-2024-57996 + 7 others
28 August 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2021-47345, CVE-2025-37752, CVE-2024-57996 + 7 others
28 August 2025
UDisks could be made to crash or run programs if it received specially crafted input.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
26 August 2025
GNU binutils could be made to crash if it received a specially crafted input.
- Ubuntu 16.04 LTS
CVE ID
21 August 2025
Several security issues were fixed in PHP.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
21 August 2025
Several security issues were fixed in Python.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
20 August 2025
poppler could be made to denial of service if it received a specially crafted PDF file.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
20 August 2025
Several security issues were fixed in LibTIFF.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2025-8176, CVE-2025-8177, CVE-2025-8851 + 1 other
20 August 2025
Several security issues were fixed in Ceph.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
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