Critical Vulnerabilities in Debian Linux Kernel Disclosed by CERT-FR

Multiple vulnerabilities were discovered in the Linux kernel of Debian on 26 June 2026, as reported by CERT-FR. These flaws enable attackers to achieve privilege escalation, data confidentiality breaches, and denial-of-service (DoS) conditions. The advisory specifies impacts on Debian’s Linux kernel but does not provide CVE identifiers, technical exploit details, or affected version ranges. No additional attack vectors, mitigations, or patch availability are explicitly mentioned in the notice. The vulnerabilities were disclosed via the CERTFR-2026-AVI-0809 advisory.