CVE-2026-64390

A flaw was found in the Linux kernel's ksmbd component, which provides Server Message Block (SMB) protocol support. This vulnerability involves incorrect management of byte-range locks when multiple connections are used with SMB3 multichannel. An attacker could exploit this by sending specially crafted SMB requests, potentially causing memory corruption. This could lead to system instability or a denial of service (DoS), making the system unavailable.