The CERT-FR reported multiple vulnerabilities in Ubuntu's Linux kernel, allowing attackers to cause unspecified security issues. The affected system is Ubuntu 18.04 ESM, and the solution is to refer to the security bulletin for obtaining patches

 Multiples vulnérabilités dans le noyau Linux d'Ubuntu - CERT-FR

A list of CVE references is provided for each vulnerability.
https://www.cert.ssi.gouv.fr/avis/CERTFR-2024-AVI-0871/