int bnep_get_conninfo(struct bnep_conninfo *ci)
{
	struct bnep_session *s;
	int err = 0;

	down_read(&bnep_session_sem);

	s = __bnep_get_session(ci->dst);
	if (s)
		__bnep_copy_ci(ci, s);
	else
		err = -ENOENT;

	up_read(&bnep_session_sem);
	return err;
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.