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-5342-1: Python vulnerabilities

28 March 2022

Several security issues were fixed in Python.

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

CVE ID

CVE-2022-0391, CVE-2021-3426, CVE-2021-4189

LSN-0085-1: Kernel Live Patch Security Notice

23 March 2022

Several security issues were fixed in the kernel.

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

CVE ID

CVE-2022-0492, CVE-2022-25636

USN-5343-1: Linux kernel vulnerabilities

22 March 2022

Several security issues were fixed in the Linux kernel.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2020-25673, CVE-2021-3564, CVE-2021-0129 + 42 others

USN-5339-1: Linux kernel vulnerabilities

22 March 2022

Several security issues were fixed in the Linux kernel.

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

CVE ID

CVE-2022-0435, CVE-2022-0492, CVE-2021-43976 + 3 others

USN-5333-2: Apache HTTP Server vulnerabilities

17 March 2022

Several security issues were fixed in Apache HTTP Server.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2022-22721, CVE-2022-22719, CVE-2022-23943 + 1 other

USN-5332-2: Bind vulnerability

17 March 2022

Bind could be made to manipulate cache results.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2021-25220

USN-5328-2: OpenSSL vulnerability

15 March 2022

OpenSSL could be made to stop responding if it opened a specially crafted certificate.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2022-0778

USN-5329-1: tar vulnerability

15 March 2022

tar could be made to crash if it received specially crafted file.

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

CVE ID

CVE-2021-20193

USN-5320-1: Expat vulnerabilities and regression

10 March 2022

Several security issues and a regression were fixed in Expat.

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

CVE ID

CVE-2022-25314, CVE-2022-25315, CVE-2022-25313

USN-5319-1: Linux kernel vulnerabilities

9 March 2022

Several security issues were fixed in the Linux kernel.

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

CVE ID

CVE-2022-0001, CVE-2022-0002

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