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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20 January 2022

Open vSwitch could be made to hang or crash if it received specially crafted network traffic.

  • Ubuntu 21.10

CVE ID

CVE-2021-3905


20 January 2022

curl could be made to expose sensitive information if it received a specially crafted input.

  • Ubuntu 16.04 LTS

20 January 2022

A security issue was fixed in the kernel.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2022-0185


19 January 2022

Several security issues were fixed in QtSvg.

  • Ubuntu 18.04 LTS

19 January 2022

The system could be made to crash or run programs as an administrator.

  • Ubuntu 21.10 ,
  • 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2022-0185


19 January 2022

pngcrush could be made to crash if it opened a specially crafted file.

  • Ubuntu 16.04 LTS

CVE ID

CVE-2015-7700


19 January 2022

ClamAV could be made to crash if it opened a specially crafted file.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

18 January 2022

Byobu could be made to expose sensitive information.

  • Ubuntu 16.04 LTS

CVE ID

CVE-2019-7306


18 January 2022

Several security issues were fixed in Ruby.

  • Ubuntu 21.10 ,
  • 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

18 January 2022

ClamAV could be made to crash if it opened a specially crafted file.

  • Ubuntu 21.10 ,
  • 21.04 ,
  • 20.04 LTS,
  • 18.04 LTS


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