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-6784-1: cJSON vulnerabilities

23 May 2024

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

  • Ubuntu 24.04 LTS,
  • 23.10 ,
  • 22.04 LTS

CVE ID

CVE-2023-50472, CVE-2023-50471, CVE-2024-31755

USN-6783-1: VLC vulnerabilities

22 May 2024

VLC could be made to crash or run programs if it received specially crafted network traffic.

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

CVE ID

CVE-2023-47360, CVE-2023-47359

USN-6782-1: Thunderbird vulnerabilities

22 May 2024

Several security issues were fixed in Thunderbird.

  • Ubuntu 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2024-4767, CVE-2024-4769, CVE-2024-4770 + 3 others

USN-6780-1: idna vulnerability

21 May 2024

idna could be made to consume significant resources if it receives a specially crafted input.

  • Ubuntu 24.04 LTS,
  • 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2024-3651

USN-6774-1: Linux kernel vulnerabilities

16 May 2024

Several security issues were fixed in the Linux kernel.

  • Ubuntu 23.10 ,
  • 22.04 LTS

CVE ID

CVE-2023-52615, CVE-2024-26801, CVE-2024-26805 + 9 others

USN-6773-1: .NET vulnerabilities

16 May 2024

Several security issues were fixed in .NET.

  • Ubuntu 24.04 LTS,
  • 23.10 ,
  • 22.04 LTS

CVE ID

CVE-2024-30045, CVE-2024-30046

USN-6771-1: SQL parse vulnerability

13 May 2024

SQL parse could be made to denial of service if it received a specially crafted input.

  • Ubuntu 24.04 LTS,
  • 23.10 ,
  • 22.04 LTS

CVE ID

CVE-2024-4340

USN-6770-1: Fossil regression

9 May 2024

Fossil regression

  • Ubuntu 24.04 LTS,
  • 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

USN-6769-1: Spreadsheet::ParseXLSX vulnerabilities

9 May 2024

Several security issues were fixed in libspreadsheet-parsexlsx-perl.

  • Ubuntu 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2024-22368, CVE-2024-23525

USN-6768-1: GLib vulnerability

9 May 2024

GLib could be made to accept spoofed D-Bus signals.

  • Ubuntu 24.04 LTS,
  • 23.10 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2024-34397

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