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-6881-1: Exim vulnerability

8 July 2024

Exim could be made to allow response injection if it received a specially crafted response.

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

CVE ID

CVE-2021-38371

USN-6879-1: Virtuoso Open-Source Edition vulnerabilities

4 July 2024

Virtuoso Open-Source Edition could be made to crash if it received specially crafted input.

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

CVE ID

CVE-2023-48945, CVE-2023-31631, CVE-2023-48951 + 10 others

USN-6866-2: Linux kernel (Azure) vulnerabilities

4 July 2024

Several security issues were fixed in the Linux kernel.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2021-33631, CVE-2021-47063, CVE-2023-52615 + 9 others

USN-6866-1: Linux kernel vulnerabilities

3 July 2024

Several security issues were fixed in the Linux kernel.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2021-33631, CVE-2024-26898, CVE-2021-47063 + 9 others

USN-6305-3: PHP regression

3 July 2024

USN-6305-2 caused a regression in parsing XML.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

USN-6865-1: Linux kernel vulnerabilities

3 July 2024

Several security issues were fixed in the Linux kernel.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2021-33631, CVE-2024-26898, CVE-2024-24861 + 6 others

USN-6844-2: CUPS regression

28 June 2024

USN-6844-1 caused the cupsd daemon to never start

  • Ubuntu 24.04 LTS,
  • 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

USN-6855-1: libcdio vulnerability

28 June 2024

libcdio could be made to crash or run programs as your login if it opened a specially crafted file.

  • Ubuntu 24.04 LTS,
  • 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2024-36600

USN-6857-1: Squid vulnerabilities

27 June 2024

Several security issues were fixed in Squid.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2023-49286, CVE-2023-49285, CVE-2024-25617 + 3 others

USN-6852-2: Wget vulnerability

27 June 2024

Wget could be made to connect to a different host than expected.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2024-38428

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