The topic of active and passive only relates to action verbs, and linking verbs don't show action. Action verbs can be written in two different "voices." These voices tell us whether the subject is performing the action (active voice) or receiving the action (passive voice).

Can linking verb ever have voice?

Passive Voice Linking Verb Examples:

In the passive voice, the construction is essentially the same as a basic sentence using a linking verb.

Do verbs have voice?

In grammar, the voice of a verb describes the relationship between the action (or state) that the verb expresses and the participants identified by its arguments (subject, object, etc.). When the subject is the agent or doer of the action, the verb is in the active voice.