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-6513-2: Python vulnerability

27 November 2023

Several security issues were fixed in Python.

  • Ubuntu 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-40217

USN-6517-1: Perl vulnerabilities

27 November 2023

Several security issues were fixed in Perl.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2022-48522, CVE-2023-47038

USN-6502-2: Linux kernel (Oracle) vulnerabilities

27 November 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 23.04

CVE ID

CVE-2023-25775, CVE-2023-5090, CVE-2023-5345 + 2 others

USN-6515-1: Thunderbird vulnerabilities

27 November 2023

Several security issues were fixed in Thunderbird.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-6206, CVE-2023-6212, CVE-2023-6204 + 4 others

USN-6511-1: OpenZFS vulnerability

23 November 2023

OpenZFS could allow unintended access to network services.

  • Ubuntu 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2013-20001

USN-6507-1: GlusterFS vulnerability

22 November 2023

GlusterFS could be made to crash if it received a specially crafted request.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS

CVE ID

CVE-2022-48340

USN-6506-1: Apache HTTP Server vulnerabilities

22 November 2023

Several security issues were fixed in Apache HTTP Server.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-45802, CVE-2023-31122, CVE-2023-43622

USN-6505-1: nghttp2 vulnerability

22 November 2023

nghttp2 could be made to consume resources if it received specially crafted network traffic.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-44487

USN-6504-1: tracker-miners vulnerability

22 November 2023

A system hardening measure could be bypassed.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS

CVE ID

CVE-2023-5557

USN-6502-1: Linux kernel vulnerabilities

21 November 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 23.04 ,
  • 22.04 LTS

CVE ID

CVE-2023-31085, CVE-2023-25775, CVE-2023-5345 + 2 others

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