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
101 - 110 of 2033 results
26 January 2026
Several security issues were fixed in GNU Screen.
- Ubuntu 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2023-24626, CVE-2025-46802, CVE-2025-46804 + 1 other
26 January 2026
Several security issues were fixed in Git LFS.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS
CVE ID
26 January 2026
Form-Data could be made to allow unintended access.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
23 January 2026
Several security issues were fixed in cJSON.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS
CVE ID
22 January 2026
pyasn1 could be made to crash if it received specially crafted input.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
22 January 2026
Several security issues were fixed in libxml2.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-0990, CVE-2026-0989, CVE-2026-0992 + 1 other
21 January 2026
OpenCC could be made to crash if it received specially crafted input.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
21 January 2026
GLib could be made to crash or run programs if it received specially crafted input.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
21 January 2026
Several security issues were fixed in iperf3.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS
CVE ID
CVE-2024-26306, CVE-2023-7250, CVE-2024-53580 + 2 others
19 January 2026
Several security issues were fixed in Apache HTTP Server.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS
CVE ID
CVE-2025-65082, CVE-2025-55753, CVE-2025-58098 + 1 other
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