CVE-2026-31536 smb: server: let send_done handle a completion without IB_SEND_SIGNALED

In the Linux kernel, the following vulnerability has been resolved: smb: server: let senddone handle a completion without IBSENDSIGNALED With smbdirectsendbatch processing we likely have requests without IBSENDSIGNALED, which will be destroyed in the final request that has IBSENDSIGNALED set. If...