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 May 2016

Several security issues were fixed in the kernel.

  • Ubuntu 15.10

9 May 2016

Several security issues were fixed in OpenSSH.

  • Ubuntu 15.10 ,
  • 14.04 LTS,
  • 12.04

5 May 2016

Several security issues were fixed in OpenJDK 7.

  • Ubuntu 15.10 ,
  • 14.04 LTS

4 May 2016

USN-2950-1 introduced regressions in Samba.

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

4 May 2016

This update fixes libsoup NTLM authentication.

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS

3 May 2016

Several security issues were fixed in OpenSSL.

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

2 May 2016

poppler could be made to crash or run programs if it opened a specially crafted file.

  • Ubuntu 15.10 ,
  • 14.04 LTS,
  • 12.04

2 May 2016

Libtasn1 could be made to hang if it processed specially crafted data.

  • Ubuntu 15.10 ,
  • 14.04 LTS,
  • 12.04

CVE ID

CVE-2016-4008


27 April 2016

Several security issues were fixed in Thunderbird.

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

27 April 2016

Several security issues were fixed in Oxide.

  • Ubuntu 16.04 LTS,
  • 15.10 ,
  • 14.04 LTS


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Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.