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-6111-1: Flask vulnerability

29 May 2023

Flask could be made to expose sensitive information in certain scenarios.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-30861

USN-6110-1: Jhead vulnerabilities

29 May 2023

Jhead could be made to crash if it opened a specially crafted file.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2021-28277, CVE-2021-28275, CVE-2021-3496

USN-6108-1: Jhead vulnerabilities

25 May 2023

Jhead could be made to crash or run programs as your login if it opened a specially crafted file.

  • Ubuntu 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2022-41751, CVE-2021-34055

USN-6105-1: ca-certificates update

24 May 2023

The CA certificates in the ca-certificates package were updated.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS

USN-6104-1: PostgreSQL vulnerabilities

24 May 2023

Several security issues were fixed in PostgreSQL.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2023-2454, CVE-2023-2455

USN-6102-1: xmldom vulnerabilities

24 May 2023

Several security issues were fixed in xmldom.

  • Ubuntu 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2021-21366, CVE-2022-37616, CVE-2022-39353

USN-6101-1: GNU binutils vulnerabilities

24 May 2023

Several security issues were fixed in GNU binutils.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-1972, CVE-2023-25588, CVE-2023-25585 + 2 others

USN-6100-1: HTML::StripScripts vulnerability

23 May 2023

HTML::StripScripts could be made to crash if it received specially crafted input.

  • Ubuntu 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-24038

USN-6073-9: os-brick regression

23 May 2023

USN-6073-4 introduced a regression in os-brick.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

USN-6073-8: Nova regression

23 May 2023

USN-6073-3 introduced a regression in Nova.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS
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