ksmbd security

The ksmbd security tag covers vulnerabilities and hardening topics related to the Linux kernel's SMB3 server implementation, ksmbd. Recent discussions focus on CVE-2026-31704, an SMB ACL overflow where unchecked DACL size accumulation can corrupt access-control buffers, and CVE-2026-23364, a timing side-channel in MAC comparison that weakens authentication. These flaws highlight that SMB security now extends beyond Windows to cross-platform kernel attack surfaces. For WindowsForum readers, the practical takeaway is that Linux ksmbd updates should be treated as critical file-server security patches, not routine maintenance, especially in mixed environments where SMB file sharing bridges Windows and Linux systems.