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.

Subscribe for updates  

Mailing list Atom RSS

Search USNs

USN ID, name, description or CVE ID contains

Filter by Ubuntu release

71 - 80 of 229 results

USN-4892-1: OpenJDK vulnerability

27 April 2021

OpenJDK’s security restriction could be bypassed when verifying Jar signatures.

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

CVE ID

CVE-2021-2163

USN-4927-1: File Roller vulnerability

26 April 2021

File Roller could be made to expose sensitive information.

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

CVE ID

CVE-2020-36314

USN-4926-1: Firefox vulnerabilities

26 April 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,
  • 16.04 LTS

CVE ID

CVE-2021-24000, CVE-2021-23996, CVE-2021-23997 + 9 others

USN-4923-1: EDK II vulnerabilities

20 April 2021

Several security issues were fixed in EDK II.

  • Ubuntu 20.10 ,
  • 20.04 LTS

CVE ID

CVE-2021-28211, CVE-2021-28210

USN-4922-1: Ruby vulnerability

20 April 2021

Ruby incorrectly handled XML documents.

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

CVE ID

CVE-2021-28965

USN-4921-1: libcaca vulnerability

20 April 2021

libcaca could be made to execute arbitrary code if it received a specially crafted image.

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

CVE ID

CVE-2021-3410

USN-4563-2: NTP vulnerability

20 April 2021

NTP could be made to crash.

  • Ubuntu 20.10 ,
  • 20.04 LTS

CVE ID

CVE-2019-8936

USN-4918-1: ClamAV vulnerabilities

19 April 2021

Several security issues were fixed in ClamAV.

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

CVE ID

CVE-2021-1405, CVE-2021-1404, CVE-2021-1252

USN-4917-1: Linux kernel vulnerabilities

15 April 2021

Several security issues were fixed in the Linux kernel.

  • Ubuntu 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2021-3492, CVE-2021-3493, CVE-2021-29154

USN-4913-1: Underscore vulnerability

14 April 2021

Underscore could be made to inject arbitrary code if it received a specially crafted input.

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

CVE ID

CVE-2021-23358

  1. Previous page
  2. 6
  3. 7
  4. 8
  5. 9
  6. 10
  7. Next page

Resources

Join the discussion

Further reading

Canonical is offering
Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›