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-rw-r--r--source3/smbd/smb2_ioctl.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/source3/smbd/smb2_ioctl.c b/source3/smbd/smb2_ioctl.c
index 491c3fd9cc..5a766e1b1a 100644
--- a/source3/smbd/smb2_ioctl.c
+++ b/source3/smbd/smb2_ioctl.c
@@ -68,7 +68,16 @@ NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req)
in_max_output_length = IVAL(inbody, 0x2C);
in_flags = IVAL(inbody, 0x30);
- if (in_input_offset != (SMB2_HDR_BODY + req->in.vector[i+1].iov_len)) {
+ /*
+ * InputOffset (4 bytes): The offset, in bytes, from the beginning of
+ * the SMB2 header to the input data buffer. If no input data is
+ * required for the FSCTL/IOCTL command being issued, the client SHOULD
+ * set this value to 0.<49>
+ * <49> If no input data is required for the FSCTL/IOCTL command being
+ * issued, Windows-based clients set this field to any value.
+ */
+ if ((in_input_length > 0)
+ && (in_input_offset != (SMB2_HDR_BODY + req->in.vector[i+1].iov_len))) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}