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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9 December 2021

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

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

9 December 2021

Several security issues were fixed in uriparser.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

9 December 2021

Several security issues were fixed in Long Range ZIP.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

7 December 2021

USN-5168-3 introduced a regression in NSS.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

1 December 2021

NSS could be made to crash or run programs if it verified a specially crafted signature.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

30 November 2021

Several security issues were fixed in the Linux kernel.

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

29 November 2021

Several security issues were fixed in ImageMagick.

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

16 November 2021

hivex could be made to crash or leak information if it received specially crafted input.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2021-3504


15 November 2021

Several security issues were fixed in Vim.

  • Ubuntu 21.10 ,
  • 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

9 November 2021

Several security issues were fixed in the Linux kernel.

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


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