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.

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USN-6677-1: libde265 vulnerabilities

5 March 2024

Several security issues were fixed in libde265.

  • Ubuntu 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2023-49468, CVE-2023-49465, CVE-2023-27102 + 4 others

USN-6664-1: less vulnerability

27 February 2024

less could be made to crash or run arbitrary commands if it receive a crafted input.

  • Ubuntu 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2022-48624

USN-6305-2: PHP vulnerabilities

27 February 2024

Several security issues were fixed in PHP.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2023-3823, CVE-2023-3824

USN-6659-1: libde265 vulnerabilities

26 February 2024

Several security issues were fixed in libde265.

  • Ubuntu 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2022-47665, CVE-2023-24752, CVE-2022-43244 + 10 others

USN-6654-1: Roundcube Webmail vulnerability

26 February 2024

Roundcube Webmail could allow cross-site scripting (XSS) attacks.

  • Ubuntu 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2023-43770

USN-6647-1: Linux kernel vulnerabilities

21 February 2024

Several security issues were fixed in the Linux kernel.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2023-7192, CVE-2023-51780, CVE-2023-51782

USN-6584-2: Libspf2 vulnerabilities

21 February 2024

Several security issues were fixed in Libspf2.

  • Ubuntu 16.04 LTS

CVE ID

CVE-2021-33913, CVE-2021-33912

USN-6646-1: Linux kernel vulnerabilities

20 February 2024

Several security issues were fixed in the Linux kernel.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-51782, CVE-2023-51780, CVE-2023-7192

USN-6644-1: LibTIFF vulnerabilities

19 February 2024

Several security issues were fixed in LibTIFF.

  • Ubuntu 23.10 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-6228, CVE-2023-52356, CVE-2023-6277

USN-6641-1: curl vulnerability

19 February 2024

curl could be made to set cookies that would bypass PSL checks.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2023-46218

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