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.

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5 - 14 of 716 results

USN-7836-1: Bind vulnerabilities

22 October 2025

Several security issues were fixed in Bind.

  • Ubuntu 25.10 ,
  • 25.04 ,
  • 24.04 LTS,
  • 22.04 LTS

CVE ID

CVE-2025-40778, CVE-2025-40780, CVE-2025-8677

USN-7835-2: Linux kernel (Real-time) vulnerabilities

22 October 2025

Several security issues were fixed in the Linux kernel.

  • Ubuntu 24.04 LTS,
  • 22.04 LTS

CVE ID

CVE-2025-22054, CVE-2025-22079, CVE-2025-22035 + 56 others

USN-7835-1: Linux kernel vulnerabilities

22 October 2025

Several security issues were fixed in the Linux kernel.

  • Ubuntu 24.04 LTS,
  • 22.04 LTS

CVE ID

CVE-2025-22054, CVE-2025-22079, CVE-2025-22035 + 56 others

USN-7833-2: Linux kernel (Real-time) vulnerabilities

22 October 2025

Several security issues were fixed in the Linux kernel.

  • Ubuntu 24.04 LTS

CVE ID

CVE-2025-38373, CVE-2025-38261, CVE-2025-38183 + 170 others

USN-7834-1: Linux kernel (Azure) vulnerabilities

22 October 2025

Several security issues were fixed in the Linux kernel.

  • Ubuntu 25.04 ,
  • 24.04 LTS

CVE ID

CVE-2025-38424, CVE-2025-38389, CVE-2025-38251 + 169 others

USN-7833-1: Linux kernel vulnerabilities

21 October 2025

Several security issues were fixed in the Linux kernel.

  • Ubuntu 25.04 ,
  • 24.04 LTS

CVE ID

CVE-2025-38424, CVE-2025-38389, CVE-2025-38251 + 170 others

USN-7831-1: Erlang vulnerabilities

21 October 2025

Several security issues were fixed in Erlang.

  • Ubuntu 25.10 ,
  • 25.04 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2025-48041, CVE-2025-48038, CVE-2025-48040 + 1 other

USN-7830-1: FFmpeg vulnerabilities

21 October 2025

Several security issues were fixed in FFmpeg.

  • Ubuntu 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2023-6603, CVE-2025-9951, CVE-2023-6605 + 2 others

USN-7828-1: Python LDAP vulnerabilities

20 October 2025

Several security issues were fixed in Python LDAP.

  • Ubuntu 25.10 ,
  • 25.04 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2025-61912, CVE-2025-61911

USN-7822-1: .NET vulnerabilities

16 October 2025

Several security issues were fixed in .NET

  • Ubuntu 25.10 ,
  • 25.04 ,
  • 24.04 LTS,
  • 22.04 LTS

CVE ID

CVE-2025-55248, CVE-2025-55315, CVE-2025-55247

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