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 2300 results
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
10 June 2021
USN-4986-1 caused a regression in rpcbind.
- Ubuntu 16.04 LTS,
- 14.04 LTS
10 June 2021
libwebp could be made to crash or run programs as your login if it opened a specially crafted file.
- Ubuntu 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2020-36331, CVE-2018-25014, CVE-2020-36328 + 7 others
9 June 2021
rpcbind could be made to consume resources and crash if it received specially crafted network traffic.
- Ubuntu 16.04 LTS,
- 14.04 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
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
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