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-6077-1: OpenJDK vulnerabilities

16 May 2023

Several security issues were fixed in OpenJDK.

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

CVE ID

CVE-2023-21937, CVE-2023-21938, CVE-2023-21968 + 4 others

USN-6074-2: Firefox regressions

16 May 2023

USN-6074-1 caused some minor regressions in Firefox.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

USN-6060-3: MySQL regression

15 May 2023

USN-6060-1 introduced a regression in MySQL.

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

USN-6075-1: Thunderbird vulnerabilities

15 May 2023

Several security issues were fixed in Thunderbird.

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

CVE ID

CVE-2023-32206, CVE-2023-32215, CVE-2023-32211 + 4 others

USN-6074-1: Firefox vulnerabilities

15 May 2023

Several security issues were fixed in Firefox.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2023-32208, CVE-2023-32206, CVE-2023-32215 + 8 others

USN-6073-5: Nova regression

14 May 2023

USN-6073-3 introduced a regression in Nova.

  • Ubuntu 20.04 LTS

USN-6073-4: os-brick vulnerability

11 May 2023

os-brick could be made to expose sensitive information.

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

CVE ID

CVE-2023-2088

USN-6073-3: Nova vulnerability

11 May 2023

Nova could be made to expose sensitive information.

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

CVE ID

CVE-2023-2088

USN-6073-2: Glance_store vulnerability

11 May 2023

Glance_store could be made to expose sensitive information.

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

CVE ID

CVE-2023-2088

USN-6073-1: Cinder vulnerability

11 May 2023

Cinder could be made to expose sensitive information.

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

CVE ID

CVE-2023-2088

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