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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USN-7343-2: Jinja2 regression

12 March 2025

USN-7343-1 introduced a regression in Jinja2.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

USN-7299-3: X.Org X Server regression

12 March 2025

USN-7299-2 caused a regression in X.Org X Server.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

USN-7347-1: Netatalk vulnerabilities

12 March 2025

Several security issues were fixed in Netatalk.

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

CVE ID

CVE-2024-38441, CVE-2024-38439, CVE-2024-38440

USN-7346-1: OpenSC vulnerabilities

12 March 2025

Several security issues were fixed in opensc.

  • Ubuntu 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2021-42780, CVE-2024-45615, CVE-2023-40660 + 10 others

USN-7343-1: Jinja2 vulnerabilities

11 March 2025

Several security issues were fixed in Jinja2.

  • Ubuntu 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2025-27516, CVE-2024-56201, CVE-2024-56326

USN-7344-1: Linux kernel vulnerabilities

11 March 2025

Several security issues were fixed in the Linux kernel.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2024-41064, CVE-2024-36964, CVE-2024-42070 + 36 others

USN-7342-1: Linux kernel vulnerabilities

11 March 2025

Several security issues were fixed in the Linux kernel.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2024-40981, CVE-2024-26685, CVE-2023-52522 + 35 others

USN-7340-1: OpenVPN vulnerabilities

11 March 2025

Several security issues were fixed in OpenVPN.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2024-5594, CVE-2017-12166

USN-7299-2: X.Org X Server vulnerabilities

10 March 2025

Several security issues were fixed in X.Org X Server.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2025-26594, CVE-2025-26601, CVE-2025-26600 + 5 others

USN-7335-1: Django vulnerability

6 March 2025

Django could be made to crash if it received specially crafted network traffic.

  • Ubuntu 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2025-26699

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