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-7636-1: Roundcube Webmail vulnerability

14 July 2025

Roundcube Webmail could be made to expose sensitive information over the network.

  • Ubuntu 24.04 LTS

CVE ID

CVE-2024-42009

USN-7545-3: Apport regression

14 July 2025

USN-7545-1 introduced a regression in Apport

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

USN-7635-1: GnuTLS vulnerabilities

14 July 2025

Several security issues were fixed in GnuTLS.

  • Ubuntu 25.04 ,
  • 24.04 LTS,
  • 22.04 LTS

CVE ID

CVE-2025-32990, CVE-2025-6395, CVE-2025-32988 + 1 other

USN-7634-1: GNU C Library vulnerabilities

14 July 2025

Several security issues were fixed in GNU C Library.

  • Ubuntu 25.04 ,
  • 24.04 LTS

CVE ID

CVE-2025-5702, CVE-2025-5745

USN-7633-1: Nix vulnerabilities

14 July 2025

Several security issues were fixed in Nix.

  • Ubuntu 24.04 LTS,
  • 22.04 LTS

CVE ID

CVE-2024-27297, CVE-2024-45593, CVE-2024-47174 + 1 other

USN-7608-6: Linux kernel (Xilinx ZynqMP) vulnerabilities

11 July 2025

Several security issues were fixed in the Linux kernel.

  • Ubuntu 22.04 LTS

CVE ID

CVE-2025-38001, CVE-2025-37997, CVE-2025-37798 + 6 others

USN-7626-3: Git regression

10 July 2025

USN-7626-1 introduced a regression in Git

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

USN-7630-1: RESTEasy vulnerabilities

10 July 2025

Several security issues were fixed in resteasy, resteasy3.0.

  • Ubuntu 25.04 ,
  • 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2021-20289, CVE-2016-6348, CVE-2020-1695 + 8 others

LSN-0113-1: Kernel Live Patch Security Notice

10 July 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-2024-57850, CVE-2024-56596, CVE-2024-50047 + 3 others

USN-7626-2: Git regression

9 July 2025

USN-7626-1 introduced a regression in Git.

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