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

51 - 60 of 229 results

USN-4953-1: AWStats vulnerabilities

13 May 2021

Several security issues were fixed in AWStats.

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

CVE ID

CVE-2020-35176, CVE-2017-1000501, CVE-2020-29600

USN-4952-1: MySQL vulnerabilities

12 May 2021

Several security issues were fixed in MySQL.

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

CVE ID

CVE-2021-2154, CVE-2021-2293, CVE-2021-2203 + 30 others

USN-4951-1: Flatpak vulnerability

12 May 2021

A Flatpak application could access files that it would not normally be permitted to access.

  • Ubuntu 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2021-21381

USN-4949-1: Linux kernel vulnerabilities

11 May 2021

Several security issues were fixed in the Linux kernel.

  • Ubuntu 20.10 ,
  • 20.04 LTS

CVE ID

CVE-2021-29265, CVE-2021-29264, CVE-2021-3489 + 9 others

USN-4944-1: MariaDB vulnerabilities

11 May 2021

Several security issues were fixed in MariaDB.

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

USN-4943-1: XStream vulnerabilities

11 May 2021

Several security issues were fixed in XStream library.

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

CVE ID

CVE-2020-26258, CVE-2021-21351, CVE-2021-21342 + 11 others

USN-4942-1: Firefox vulnerability

10 May 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-2021-29952

USN-4941-1: Exiv2 vulnerabilities

10 May 2021

Several security issues were fixed in Exiv2.

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

CVE ID

CVE-2021-29458, CVE-2021-3482, CVE-2021-29470 + 1 other

USN-4940-1: PyYAML vulnerability

10 May 2021

PyYAML could be made to run programs if it opened a specially crafted YAML file.

  • Ubuntu 20.10 ,
  • 20.04 LTS

CVE ID

CVE-2020-14343

USN-4939-1: WebKitGTK vulnerabilities

10 May 2021

Several security issues were fixed in WebKitGTK.

  • Ubuntu 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2021-1871, CVE-2021-1844, CVE-2021-1788

  1. Previous page
  2. 4
  3. 5
  4. 6
  5. 7
  6. 8
  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 ›