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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121 - 130 of 178 results

USN-5011-1: Firefox vulnerabilities

16 July 2021

Firefox could be made to crash or run programs as your login if it opened a malicious website.

  • Ubuntu 21.04 ,
  • 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2021-29974, CVE-2021-29977, CVE-2021-30547 + 4 others

USN-5010-1: QEMU vulnerabilities

15 July 2021

Several security issues were fixed in QEMU.

  • Ubuntu 21.04 ,
  • 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2021-3594, CVE-2021-3546, CVE-2021-3545 + 18 others

USN-5009-1: libslirp vulnerabilities

15 July 2021

Several security issues were fixed in libslirp.

  • Ubuntu 21.04 ,
  • 20.10 ,
  • 20.04 LTS

CVE ID

CVE-2021-3594, CVE-2021-3593, CVE-2020-29130 + 3 others

USN-5008-1: Avahi vulnerabilities

7 July 2021

Several security issues were fixed in Avahi.

  • Ubuntu 21.04 ,
  • 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2021-3468, CVE-2021-3502

USN-5007-1: libuv vulnerability

7 July 2021

libuv could be made to crash or expose sensitive information if it received a specially crafted input.

  • Ubuntu 21.04 ,
  • 20.10 ,
  • 20.04 LTS

CVE ID

CVE-2021-22918

USN-5006-1: PHP vulnerabilities

7 July 2021

Several security issues were fixed in PHP.

  • Ubuntu 21.04 ,
  • 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2020-7071, CVE-2021-21704, CVE-2021-21702 + 2 others

USN-4997-2: Linux kernel (KVM) vulnerabilities

25 June 2021

Several security issues were fixed in the Linux kernel.

  • Ubuntu 21.04

CVE ID

CVE-2020-26145, CVE-2021-23134, CVE-2021-31440 + 14 others

USN-5004-1: RabbitMQ vulnerabilities

24 June 2021

Several security issues were fixed in rabbitmq-server.

  • Ubuntu 21.04 ,
  • 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2021-22116, CVE-2019-11287

USN-4997-1: Linux kernel vulnerabilities

23 June 2021

Several security issues were fixed in the Linux kernel.

  • Ubuntu 21.04

CVE ID

CVE-2021-23134, CVE-2021-3506, CVE-2020-24586 + 14 others

USN-4995-1: Thunderbird vulnerabilities

22 June 2021

Several security issues were fixed in Thunderbird.

  • Ubuntu 21.04 ,
  • 20.10 ,
  • 20.04 LTS

CVE ID

CVE-2021-23961, CVE-2021-29967, CVE-2021-23991 + 17 others

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