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

1821 - 1830 of 9814 results

USN-6515-1: Thunderbird vulnerabilities

27 November 2023

Several security issues were fixed in Thunderbird.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-6206, CVE-2023-6212, CVE-2023-6204 + 4 others

USN-6514-1: Open vSwitch vulnerability

26 November 2023

Open vSwitch could be made to expose sensitive information over the network.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS

CVE ID

CVE-2023-5366

USN-6513-1: Python vulnerabilities

23 November 2023

Several security issues were fixed in Python.

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

CVE ID

CVE-2023-40217, CVE-2022-48564

USN-6512-1: LibTIFF vulnerabilities

23 November 2023

Several security issues were fixed in LibTIFF.

  • Ubuntu 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-3576, CVE-2022-40090

USN-6511-1: OpenZFS vulnerability

23 November 2023

OpenZFS could allow unintended access to network services.

  • Ubuntu 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2013-20001

USN-6510-1: Apache HTTP Server vulnerability

23 November 2023

Apache HTTP Server could be made to crash if it received a specially crafted request.

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

CVE ID

CVE-2023-31122

USN-6509-1: Firefox vulnerabilities

23 November 2023

Several security issues were fixed in Firefox.

  • Ubuntu 20.04 LTS

CVE ID

CVE-2023-6207, CVE-2023-6213, CVE-2023-6210 + 7 others

USN-6508-1: poppler vulnerabilities

23 November 2023

Several security issues were fixed in poppler.

  • Ubuntu 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2022-37051, CVE-2020-23804, CVE-2022-38349 + 2 others

USN-6507-1: GlusterFS vulnerability

22 November 2023

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

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS

CVE ID

CVE-2022-48340

USN-6506-1: Apache HTTP Server vulnerabilities

22 November 2023

Several security issues were fixed in Apache HTTP Server.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-45802, CVE-2023-31122, CVE-2023-43622

  1. Previous page
  2. 181
  3. 182
  4. 183
  5. 184
  6. 185
  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 ›