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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9 June 2016

Several security issues were fixed in Squid.

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS,
  • 12.04

9 June 2016

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

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS,
  • 12.04

6 June 2016

Several security issues were fixed in libxml2.

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS,
  • 12.04

2 June 2016

Several security issues were fixed in ImageMagick.

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS,
  • 12.04

31 May 2016

The GD library could be made to crash or run programs if it processed a specially crafted image file.

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS,
  • 12.04

31 May 2016

dosfstools could be made to crash or run programs if it processed a specially crafted filesystem.

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS,
  • 12.04

26 May 2016

USN-2985-1 introduced a regression in the GNU C Library.

  • Ubuntu 15.10 ,
  • 14.04 LTS,
  • 12.04

25 May 2016

Several security issues were fixed in the GNU C Library.

  • Ubuntu 15.10 ,
  • 14.04 LTS,
  • 12.04

24 May 2016

Several security issues were fixed in PHP.

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS,
  • 12.04

19 May 2016

USN-2936-1 introduced a regression in Firefox.

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS,
  • 12.04


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