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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USN-4369-1: Linux kernel vulnerabilities

24 May 2020

Several security issues were fixed in the Linux kernel.

  • Ubuntu 19.10 ,
  • 18.04 LTS

CVE ID

CVE-2019-19377, CVE-2019-19769, CVE-2020-11494 + 6 others

USN-4372-1: QEMU vulnerabilities

21 May 2020

Several security issues were fixed in QEMU.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2019-15034, CVE-2019-20382, CVE-2020-10702 + 2 others

USN-4371-1: libvirt vulnerabilities

21 May 2020

Several security issues were fixed in libvirt.

  • Ubuntu 19.10 ,
  • 18.04 LTS

CVE ID

CVE-2020-10703, CVE-2020-12430

USN-4370-1: ClamAV vulnerabilities

21 May 2020

Several security issues were fixed in ClamAV.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2020-3327, CVE-2020-3341

USN-4366-1: Exim vulnerability

19 May 2020

Exim could be made to access sensitive information or bypass authentication if it received a specially crafted input.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2020-12783

USN-4365-1: Bind vulnerabilities

19 May 2020

Several security issues were fixed in Bind.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2020-8616, CVE-2020-8617

USN-4362-1: DPDK vulnerabilities

18 May 2020

Several security issues were fixed in DPDK.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS

CVE ID

CVE-2020-10722, CVE-2020-10723, CVE-2020-10724 + 2 others

USN-4361-1: Dovecot vulnerabilities

18 May 2020

Several security issues were fixed in Dovecot.

  • Ubuntu 20.04 LTS,
  • 19.10

CVE ID

CVE-2020-10957, CVE-2020-10958, CVE-2020-10967

USN-4360-2: json-c regression

15 May 2020

USN-4360-1 introduced a regression in json-c.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS

USN-4360-1: json-c vulnerability

14 May 2020

json-c could be made to execute arbitrary code if it received a specially crafted JSON file.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS,
  • 12.04

CVE ID

CVE-2020-12762

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