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

21 - 27 of 27 results

USN-7454-1: libarchive vulnerabilities

23 April 2025

Several security issues were fixed in libarchive.

  • Ubuntu 25.04 ,
  • 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2025-25724, CVE-2025-1632

USN-7446-1: mod_auth_openidc vulnerability

23 April 2025

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

  • Ubuntu 25.04 ,
  • 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS

CVE ID

CVE-2025-31492

USN-7447-1: Yelp vulnerability

23 April 2025

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

  • Ubuntu 25.04 ,
  • 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2025-3155

USN-7434-2: Perl vulnerability

23 April 2025

Perl could be made to crash or run programs if it processed specially crafted data.

  • Ubuntu 25.04

CVE ID

CVE-2024-56406

USN-7431-2: HAProxy vulnerability

23 April 2025

HAProxy could be made to crash or run programs if it received specially crafted network traffic.

  • Ubuntu 25.04

CVE ID

CVE-2025-32464

USN-7443-2: Erlang vulnerability

23 April 2025

Erlang could be made to run programs if it received specially crafted network traffic.

  • Ubuntu 25.04

CVE ID

CVE-2025-32433

USN-7364-1: OpenSAML vulnerability

21 March 2025

OpenSAML and OpenSAML2 could have their authentication systems bypassed.

  • Ubuntu 25.04 ,
  • 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS
  1. Previous page
  2. 1
  3. 2
  4. 3
  5. 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 ›