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-5372-1: Subversion vulnerabilities

12 April 2022

Several security issues were fixed in Subversion.

  • Ubuntu 21.10 ,
  • 20.04 LTS

CVE ID

CVE-2021-28544, CVE-2022-24070

USN-5371-1: nginx vulnerabilities

12 April 2022

Several security issues were fixed in nginx.

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

CVE ID

CVE-2020-36309, CVE-2021-3618, CVE-2020-11724

USN-5374-1: libarchive vulnerability

11 April 2022

libarchive could be made to expose sensitive information if it received a specially crafted archive file.

  • Ubuntu 21.10 ,
  • 20.04 LTS

CVE ID

CVE-2022-26280

USN-5373-1: Django vulnerabilities

11 April 2022

Several security issues were fixed in Django.

  • Ubuntu 21.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2022-28346, CVE-2021-32052, CVE-2022-28347

USN-5370-1: Firefox vulnerabilities

7 April 2022

Firefox could be made to crash or run programs as your login if it opened a malicious website.

  • Ubuntu 21.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2022-1097, CVE-2022-28285, CVE-2022-28283 + 8 others

USN-5369-1: oslo.utils vulnerability

7 April 2022

oslo.utils could be made to expose sensitive information if it received a specially crafted input.

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

CVE ID

CVE-2022-0718

USN-5366-1: FriBidi vulnerabilities

7 April 2022

Several security issues were fixed in fribidi.

  • Ubuntu 21.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2022-25310, CVE-2022-25308, CVE-2022-25309

USN-5365-1: H2 vulnerabilities

5 April 2022

Several security issues were fixed in H2.

  • Ubuntu 21.10 ,
  • 20.04 LTS

CVE ID

CVE-2021-42392, CVE-2022-23221

USN-5364-1: Waitress vulnerability

5 April 2022

waitress could be made to expose sensitive information if it received a specially crafted request.

  • Ubuntu 21.10 ,
  • 20.04 LTS

CVE ID

CVE-2022-24761

USN-5358-2: Linux kernel vulnerabilities

31 March 2022

Several security issues were fixed in the Linux kernel.

  • Ubuntu 21.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2022-1055, CVE-2022-27666

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