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-6370-1: ModSecurity vulnerabilities

14 September 2023

Several security issues were fixed in ModSecurity.

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

CVE ID

CVE-2021-42717, CVE-2023-24021, CVE-2022-48279

USN-6237-3: curl vulnerabilities

11 September 2023

Several security issues were fixed in curl.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-28322, CVE-2023-28321

USN-6342-2: Linux kernel (Azure)

8 September 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-3611, CVE-2023-2269, CVE-2023-2985 + 3 others

USN-6354-1: Python vulnerability

7 September 2023

Python could be made to crash or leak sensitive information if it received specially crafted input.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2022-48565

USN-6345-1: SoX vulnerability

6 September 2023

SoX could be made to crash if it received specially crafted input.

  • Ubuntu 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-32627

USN-6341-1: Linux kernel vulnerabilities

6 September 2023

Several security issues were fixed in the Linux kernel.

  • Ubuntu 14.04 LTS

CVE ID

CVE-2023-3567, CVE-2023-3776, CVE-2023-0458 + 2 others

LSN-0097-1: Kernel Live Patch Security Notice

5 September 2023

Several security issues were fixed in the kernel.

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

CVE ID

CVE-2023-31248, CVE-2023-32629, CVE-2023-3090 + 4 others

USN-6335-1: BusyBox vulnerabilities

4 September 2023

Several security issues were fixed in BusyBox.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2022-48174, CVE-2021-28831

USN-6326-1: GitPython vulnerability

31 August 2023

GitPython could be made to run arbitrary commands on the host.

  • Ubuntu 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-40267

USN-6322-1: elfutils vulnerabilities

30 August 2023

Several security issues were fixed in elfutils.

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

CVE ID

CVE-2021-33294, CVE-2020-21047, CVE-2018-18521 + 7 others

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