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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27 July 2023

Several security issues were fixed in Open-iSCSI.

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

27 July 2023

open-vm-tools could be made to bypass authentication.

  • Ubuntu 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

26 July 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 20.04 LTS

26 July 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

25 July 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 22.04 LTS,
  • 20.04 LTS

25 July 2023

AMD processors may allow an attacker to expose sensitive information due to a vector register speculative execution vulnerability.

  • Ubuntu 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

25 July 2023

Several security issues were fixed in the kernel.

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

25 July 2023

Several security issues were fixed in Graphite-Web.

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

24 July 2023

OpenSSH could be made to run programs as your login when using ssh-agent forwarding.

  • Ubuntu 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

20 July 2023

wkhtmltopdf could be made to expose sensitive information if it opened a specially crafted file.

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


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