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
11 - 20 of 1704 results
19 August 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 22.04 LTS
CVE ID
CVE-2025-38034, CVE-2025-38079, CVE-2025-38078 + 18 others
19 August 2025
Several security issues were fixed in the Linux kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-21859, CVE-2024-52559, CVE-2025-21791 + 67 others
19 August 2025
Several security issues were fixed in WebKitGTK.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-43227, CVE-2025-43216, CVE-2025-31273 + 7 others
19 August 2025
GNU Compiler Collection's (GCC) could be made to ignore security checks.
- Ubuntu 22.04 LTS,
- 20.04 LTS
CVE ID
18 August 2025
Several security issues were fixed in the kernel.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2022-49176, CVE-2023-52885, CVE-2022-49179 + 5 others
14 August 2025
Several security issues were fixed in AIDE.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
14 August 2025
Several security issues were fixed in Sidekiq.
- Ubuntu 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
14 August 2025
Several security issues were fixed in libxml2.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2025-6021, CVE-2025-6170, CVE-2025-49796 + 1 other
13 August 2025
Several security issues were fixed in Request Tracker.
- Ubuntu 25.04 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2023-41259, CVE-2024-3262, CVE-2022-25803 + 8 others
13 August 2025
USN-6885-1 introduced a regression in Apache HTTP Server.
- Ubuntu 24.04 LTS,
- 22.04 LTS
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