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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14 October 2020

Several security issues were fixed in the Linux kernel.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

7 October 2020

Several security issues were fixed in Vino.

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

6 October 2020

Spice could be made to crash or run programs if it received specially crafted network traffic.

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

5 October 2020

Cyrus IMAP Server could be made to overwrite files as the administrator.

  • Ubuntu 18.04 LTS

5 October 2020

urllib3 could be used to perform a CRLF injection if it received a specially crafted request.

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

5 October 2020

OpenDMARC could allow signature bypass under certain conditions.

  • Ubuntu 18.04 LTS

5 October 2020

Several security issues were fixed in Yaws.

  • Ubuntu 18.04 LTS

5 October 2020

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

  • Ubuntu 18.04 LTS

5 October 2020

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

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

CVE ID

CVE-2020-8927


1 October 2020

NTP could be made to crash.

  • Ubuntu 18.04 LTS

CVE ID

CVE-2019-8936



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