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-5164-1: Linux kernel vulnerabilities

30 November 2021

Several security issues were fixed in the Linux kernel.

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

CVE ID

CVE-2021-37159, CVE-2021-3764, CVE-2021-3744

USN-5158-1: ImageMagick vulnerabilities

29 November 2021

Several security issues were fixed in ImageMagick.

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

CVE ID

CVE-2021-20244, CVE-2021-20246, CVE-2021-20309 + 2 others

USN-5148-2: hivex vulnerability

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

USN-5147-1: Vim vulnerabilities

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

CVE ID

CVE-2021-3928, CVE-2021-3927, CVE-2017-17087 + 3 others

USN-5136-1: Linux kernel vulnerabilities

9 November 2021

Several security issues were fixed in the Linux kernel.

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

CVE ID

CVE-2021-38199, CVE-2020-36322, CVE-2021-3759 + 6 others

USN-5130-1: Linux kernel vulnerabilities

9 November 2021

Several security issues were fixed in the Linux kernel.

  • Ubuntu 14.04 LTS

CVE ID

CVE-2020-29660, CVE-2020-29661

USN-5133-1: ICU vulnerability

4 November 2021

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

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

CVE ID

CVE-2020-21913

USN-5126-2: Bind vulnerability

28 October 2021

Bind could be made to consume resources if it received specially crafted network traffic.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2021-25219

USN-5125-1: PHP vulnerability

27 October 2021

PHP-PFM in PHP could be made to run program as an administrator if it received specially crafted input.

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

CVE ID

CVE-2021-21703

USN-5122-2: Apport vulnerability

26 October 2021

Apport could be made to create files as the administrator.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS
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