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-6006-1: .NET vulnerability

11 April 2023

.NET could be made to run programs as your login.

  • Ubuntu 22.10 ,
  • 22.04 LTS

CVE ID

CVE-2023-28260

USN-6005-1: Sudo vulnerabilities

11 April 2023

Several security issues were fixed in Sudo.

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

CVE ID

CVE-2023-28486, CVE-2023-28487

USN-6002-1: Irssi vulnerability

10 April 2023

Irssi could be made to crash in specific scenarios.

  • Ubuntu 22.10

CVE ID

CVE-2023-29132

USN-5996-1: Liblouis vulnerabilities

4 April 2023

Several security issues were fixed in liblouis.

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

CVE ID

CVE-2023-26769, CVE-2023-26768, CVE-2023-26767

USN-5995-1: Vim vulnerabilities

4 April 2023

Several security issues were fixed in Vim.

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

CVE ID

CVE-2022-1968, CVE-2022-2125, CVE-2022-2304 + 27 others

USN-5994-1: HAProxy vulnerability

3 April 2023

HAProxy could be made to expose sensitive information over the network.

  • Ubuntu 22.10 ,
  • 22.04 LTS

CVE ID

CVE-2023-0836

USN-5993-1: Samba vulnerabilities

3 April 2023

Samba could be made to expose sensitive information over the network.

  • Ubuntu 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-0614, CVE-2023-0922

USN-5966-3: amanda regression

3 April 2023

Several security issues were fixed in amanda.

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

CVE ID

CVE-2022-37704, CVE-2022-37703, CVE-2022-37705

USN-5855-3: ImageMagick regression

31 March 2023

USN-5855-1 introduced a regression in ImageMagick.

  • Ubuntu 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

USN-5986-1: X.Org X Server vulnerability

29 March 2023

X.Org X Server could be made to crash or run programs as the administrator if it received specially crafted input.

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

CVE ID

CVE-2023-1393

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