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
11 - 20 of 229 results
7 July 2021
Several security issues were fixed in PHP.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2020-7071, CVE-2021-21704, CVE-2021-21702 + 2 others
25 June 2021
Several security issues were fixed in Ceph.
- Ubuntu 20.10 ,
- 20.04 LTS
CVE ID
CVE-2021-3509, CVE-2020-27839, CVE-2021-20288 + 4 others
24 June 2021
Several security issues were fixed in rabbitmq-server.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
23 June 2021
Several security issues were fixed in the Linux kernel.
- Ubuntu 20.10 ,
- 20.04 LTS
CVE ID
CVE-2021-31440, CVE-2020-25670, CVE-2020-26141 + 14 others
22 June 2021
Several security issues were fixed in Thunderbird.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS
CVE ID
CVE-2021-23961, CVE-2021-29967, CVE-2021-23991 + 17 others
21 June 2021
Several security issues were fixed in Apache HTTP Server.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2021-26691, CVE-2021-26690, CVE-2020-35452 + 2 others
21 June 2021
Several security issues were fixed in Dovecot.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS
CVE ID
18 June 2021
Several security issues were fixed in GRUB 2.
- Ubuntu 20.10 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2021-20225, CVE-2020-14372, CVE-2020-25632 + 3 others
17 June 2021
Several security issues were fixed in libxml2.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2021-3516, CVE-2017-8872, CVE-2020-24977 + 5 others
17 June 2021
Several security issues were fixed in Nettle.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
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