Linux EUVD-2026-15240

Update the Linux kernel to a version that includes the security patches referenced in the kernel stable repository (commits ff0ece8ed04180c52167c003362284b23cf54e8d and others). Most major Linux distributions will release patched kernels through their standard security channels; monitor your distribution's security advisories (Red Hat Security Advisories, Ubuntu Security Notices, Debian Security Updates, etc.) and apply kernel updates at your earliest maintenance window. As an interim mitigation, disable kernel debug logging for the CIFS subsystem if it is not actively required, and restrict access to kernel logs (/var/log/kern.log, dmesg output) to privileged users only via file permissions and audit controls. Additionally, implement credential rotation for SMB/CIFS service accounts shortly after applying patches, as any credentials that may have been logged prior to patching should be considered compromised. Monitor systems for signs of unauthorized SMB access using network segmentation and access logging on SMB servers.