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
21 - 30 of 178 results
17 December 2021
Several security issues were fixed in OpenJDK.
- Ubuntu 21.10 ,
- 21.04 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2021-35556, CVE-2021-35561, CVE-2021-35588 + 11 others
16 December 2021
HTMLDOC could be made to crash if it received specially crafted input.
- Ubuntu 21.04 ,
- 20.04 LTS
CVE ID
15 December 2021
Apache Log4j 2 could be made to crash if it received specially crafted input.
- Ubuntu 21.10 ,
- 21.04 ,
- 20.04 LTS
CVE ID
14 December 2021
Several security issues were fixed in X.Org X Server.
- Ubuntu 21.10 ,
- 21.04 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2021-4008, CVE-2021-4010, CVE-2021-4011 + 1 other
14 December 2021
Apache Log4j 2 could be made to crash or run programs as an administrator if it received a specially crafted input.
- Ubuntu 21.10 ,
- 21.04 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
14 December 2021
A system hardening measure could be bypassed.
- Ubuntu 21.10 ,
- 21.04 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
13 December 2021
USN-5142-1 introduced a regression in Samba.
- Ubuntu 21.10 ,
- 21.04 ,
- 20.04 LTS
13 December 2021
Keepalived could be made to access-control bypass if it received a specially crafted message.
- Ubuntu 21.10 ,
- 21.04 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
9 December 2021
Firefox could be made to crash or run programs as your login if it opened a malicious website.
- Ubuntu 21.10 ,
- 21.04 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2021-43538, CVE-2021-43545, CVE-2021-43540 + 7 others
7 December 2021
Several security issues were fixed in BusyBox.
- Ubuntu 21.10 ,
- 21.04 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2021-28831, CVE-2021-42378, CVE-2021-42386 + 7 others
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