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
131 - 140 of 178 results
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
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
16 June 2021
Several security issues were fixed in BlueZ.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
10 June 2021
libimage-exiftool-perl could be made to crash if it opened a specially crafted file.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
9 June 2021
Several security issues were fixed in Intel Microcode.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2020-24512, CVE-2020-24513, CVE-2020-24511 + 1 other
7 June 2021
USN-4937-1 introduced a regression in GNOME Autoar.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS
7 June 2021
USN-4969-1 introduced a regression in DHCP.
- Ubuntu 21.04
3 June 2021
Several security issues were fixed in Squid.
- Ubuntu 21.04 ,
- 20.10 ,
- 20.04 LTS,
- 18.04 LTS
CVE ID
CVE-2021-28651, CVE-2021-28652, CVE-2021-31806 + 4 others
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