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.
Search USNs
USN ID, name, description or CVE ID contains
591 - 600 of 2295 results
4 June 2021
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2021-31916, CVE-2021-3428, CVE-2020-25670 + 10 others
31 May 2021
LZ4 could be made to crash or run programs if it opened a specially crafted file.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
27 May 2021
nginx could be made to crash or run programs if it received specially crafted network traffic.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
27 May 2021
DHCP could be made to crash if it received specially crafted network traffic.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
25 May 2021
libx11 could allow unintended access to services.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
25 May 2021
Several security issues were fixed in Apport.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2021-32549, CVE-2021-32555, CVE-2021-32551 + 8 others
19 May 2021
Babel code be made to execute arbitrary code if it received a specially crafted input.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
13 May 2021
Django could be made to overwrite files.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
11 May 2021
Several security issues were fixed in the Linux kernel.
- Ubuntu 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2021-20292, CVE-2021-26930, CVE-2021-29264 + 6 others
6 May 2021
Several security issues were fixed in Exim.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2020-28011, CVE-2020-28009, CVE-2021-27216 + 13 others
Resources
Join the discussion
Canonical is offering
Expanded Security Maintenance
Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.