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-6099-1: ncurses vulnerabilities

23 May 2023

Several security issues were fixed in ncurses.

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

CVE ID

CVE-2021-39537, CVE-2023-29491, CVE-2022-29458 + 2 others

USN-6073-7: Glance_store regression

23 May 2023

USN-6073-2 introduced a regression in Glance_store.

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

USN-6073-6: Cinder regression

23 May 2023

USN-6073-1 introduced a regression in Cinder.

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

USN-6096-1: Linux kernel vulnerabilities

22 May 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 22.10 ,
  • 22.04 LTS

CVE ID

CVE-2023-23454, CVE-2023-0458, CVE-2023-1075 + 22 others

USN-6091-1: Linux kernel vulnerabilities

18 May 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 22.10

CVE ID

CVE-2022-36280, CVE-2023-0210, CVE-2023-0394 + 22 others

USN-6088-1: runC vulnerabilities

18 May 2023

Several security issues were fixed in runC.

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

CVE ID

CVE-2023-28642, CVE-2023-27561, CVE-2023-25809

USN-6083-1: cups-filters vulnerability

17 May 2023

cups-filters could be made to crash or run programs if it received specially crafted network traffic.

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

CVE ID

CVE-2023-24805

USN-6079-1: Linux kernel vulnerabilities

16 May 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 22.10 ,
  • 22.04 LTS

CVE ID

CVE-2023-0458, CVE-2023-26544, CVE-2022-4842 + 22 others

USN-6078-1: libwebp vulnerability

16 May 2023

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

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

CVE ID

CVE-2023-1999

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

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