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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12 August 2021

Several security issues were fixed in PostgreSQL.

  • Ubuntu 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS

12 August 2021

USN-3809-1 introduced a regression in OpenSSH.

  • Ubuntu 18.04 LTS

11 August 2021

Firefox could be made to crash or run programs as your login if it opened a malicious website.

  • Ubuntu 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS

10 August 2021

c-ares could be made to return wrong domains.

  • Ubuntu 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2021-3672


5 August 2021

This update provides a new upstream version.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

4 August 2021

Several security issues were fixed in Perl DBI module.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

2 August 2021

Exiv2 could be made to denial of service if received a specially crafted image.

  • Ubuntu 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

29 July 2021

PEAR could be made to overwrite files as the administrator.

  • Ubuntu 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS

29 July 2021

Several security issues were fixed in QPDF.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

29 July 2021

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

  • Ubuntu 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2021-3246



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