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-5810-4: Git vulnerabilities

1 March 2023

Several security issues were fixed in Git.

  • Ubuntu 14.04 LTS

CVE ID

CVE-2022-23521, CVE-2022-41903

USN-5900-1: tar vulnerability

28 February 2023

tar could be made to crash or expose sensitive information if it received a specially crafted file.

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

CVE ID

CVE-2022-48303

USN-5638-4: Expat vulnerabilities

28 February 2023

Expat could be made to crash or execute arbitrary code.

  • Ubuntu 14.04 LTS

CVE ID

CVE-2022-40674, CVE-2022-43680

USN-5821-3: pip regression

28 February 2023

USN-5821-1 caused a regression in pip.

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

CVE ID

CVE-2022-40898

USN-5894-1: curl vulnerabilities

27 February 2023

Several security issues were fixed in curl.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2021-22925, CVE-2021-22898, CVE-2022-43552

USN-5887-1: ClamAV vulnerabilities

27 February 2023

Several security issues were fixed in ClamAV.

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

CVE ID

CVE-2023-20032, CVE-2023-20052

USN-5778-2: X.Org X Server vulnerabilities

16 February 2023

Several security issues were fixed in X.Org X Server.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2022-46344, CVE-2023-0494, CVE-2022-46341 + 4 others

USN-5872-1: NSS vulnerabilities

15 February 2023

Several security issues were fixed in NSS.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2022-22747, CVE-2022-34480

USN-5870-1: apr-util vulnerability

14 February 2023

APR-util could be made to crash or run programs as an administrator if it received specially crafted input.

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

CVE ID

CVE-2022-25147

USN-5849-1: Heimdal vulnerabilities

8 February 2023

Heimdal could be made to crash if it received specially crafted input.

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

CVE ID

CVE-2022-45142

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