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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171 - 180 of 8924 results

1 October 2024

Python could be made to bypass some restrictions if it received specially crafted input.

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

1 October 2024

Several security issues were fixed in knot-resolver.

  • Ubuntu 20.04 LTS

30 September 2024

Flatpak could be made to read and write files in locations it would not normally have access to.

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

26 September 2024

libppd could be made to run programs if it received specially crafted network traffic.

  • Ubuntu 24.04 LTS

26 September 2024

libcupsfilters could be made to run programs if it received specially crafted network traffic.

  • Ubuntu 24.04 LTS

26 September 2024

cups-filters could be made to run programs if it received specially crafted network traffic.

  • Ubuntu 22.04 LTS,
  • 20.04 LTS

26 September 2024

cups-browsed could be made to run programs if it received specially crafted network traffic.

  • Ubuntu 24.04 LTS

26 September 2024

CUPS could be made to crash or run programs if it received specially crafted network traffic.

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

26 September 2024

ConfigObj could be made to crash if it received specially crafted input.

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

26 September 2024

Several security issues were fixed in the Linux kernel.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS


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