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-4489-1: Linux kernel vulnerability

8 September 2020

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

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

CVE ID

CVE-2020-14386

USN-4485-1: Linux kernel vulnerabilities

3 September 2020

Several security issues were fixed in the Linux kernel.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2018-20669, CVE-2019-19947, CVE-2019-20810 + 11 others

USN-4449-2: Apport vulnerabilities

2 September 2020

Several security issues were fixed in Apport.

  • Ubuntu 14.04 LTS

CVE ID

CVE-2020-11936, CVE-2020-15701, CVE-2020-15702

USN-4486-1: Linux kernel vulnerability

2 September 2020

The Linux kernel could be made to crash if it mounted a malicious XFS file system.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2018-10323

USN-4471-2: Net-SNMP regression

1 September 2020

USN-4471-1 introduced a regression in Net-SNMP.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

USN-4478-1: Python-RSA vulnerability

31 August 2020

Python-RSA could be made to expose sensitive information over the network.

  • Ubuntu 14.04 LTS

CVE ID

CVE-2020-13757

USN-4476-1: NSS vulnerability

27 August 2020

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

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

CVE ID

CVE-2020-12403

USN-4471-1: Net-SNMP vulnerabilities

24 August 2020

Several security issues were fixed in Net-SNMP.

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

CVE ID

CVE-2020-15861, CVE-2020-15862

USN-4468-2: Bind vulnerability

24 August 2020

Bind could be made to crash if it received a specially crafted request.

  • Ubuntu 14.04 LTS,
  • 12.04

CVE ID

CVE-2020-8622

USN-4466-2: curl vulnerability

20 August 2020

curl could be made to expose sensitive information over the network.

  • Ubuntu 14.04 LTS

CVE ID

CVE-2020-8231

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