Security Alert: Multiple Vulnerabilities in Ubuntu Linux Kernel

The CERT-FR (Governmental Center for Monitoring, Alert, and Response to Computer Attacks) has issued an advisory regarding multiple vulnerabilities in the Linux kernel of Ubuntu. These vulnerabilities, identified as CVE-2023-21400, CVE-2023-3090, CVE-2023-3567, CVE-2023-3609, CVE-2023-3776, CVE-2023-3777, CVE-2023-3995, CVE-2023-4004, CVE-2023-40283, and CVE-2023-4128, pose risks such as arbitrary code execution, data confidentiality breaches, and denial of service.

Risk Summary:

  • Unauthorized access to confidential data.
  • Denial of service.
  • Arbitrary code execution.
  • Privilege escalation.

Affected Systems:

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

Solution: Users are advised to promptly apply the patches provided by Ubuntu. Refer to the security bulletin from the vendor for detailed information.

Note: For more information on the vulnerabilities and patches, please consult the official security notice from Ubuntu dated October 10, 2023.