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-6064-1: SQL parse vulnerability

10 May 2023

SQL parse could be made to denial of service if it received a specially crafted regular expression.

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

CVE ID

CVE-2023-30608

USN-6063-1: Ceph vulnerabilities

9 May 2023

Several security issues were fixed in Ceph.

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

CVE ID

CVE-2021-3979, CVE-2022-3854, CVE-2022-3650 + 1 other

USN-6060-1: MySQL vulnerabilities

8 May 2023

Several security issues were fixed in MySQL.

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

CVE ID

CVE-2023-21940, CVE-2023-21953, CVE-2023-21982 + 17 others

USN-6055-2: Ruby regression

5 May 2023

USN-6055-1 introduced a regression.

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

CVE ID

CVE-2023-28755

USN-6058-1: Linux kernel vulnerability

5 May 2023

The system could be made to run programs as an administrator.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2023-1829

USN-6055-1: Ruby vulnerabilities

4 May 2023

Several security issues were fixed in Ruby.

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

CVE ID

CVE-2023-28755, CVE-2023-28756

USN-6054-1: Django vulnerability

3 May 2023

A Django hardening measure could be bypassed.

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

CVE ID

CVE-2023-31047

USN-6052-1: Linux kernel vulnerability

1 May 2023

The system could be made to run programs as an administrator.

  • Ubuntu 18.04 LTS

CVE ID

CVE-2023-1829

USN-6050-1: Git vulnerabilities

1 May 2023

Several security issues were fixed in Git.

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

CVE ID

CVE-2023-25815, CVE-2023-29007, CVE-2023-25652

USN-6049-1: Netty vulnerabilities

28 April 2023

Several security issues were fixed in Netty.

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

CVE ID

CVE-2021-21295, CVE-2022-41881, CVE-2021-37137 + 6 others

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