Can she marry her
mother’s half-brother?
Question

                can i marry my mother's step brother (my
      step-uncle)? my mother and this brother of hers belong to the same father but different
      mothers.does the fact that we are both hanafis make a difference?
Praise be to Allah.The mothers brother is an uncle (khaal  maternal uncle)
    whether he is a full brother or a half-brother through the father or mother. On this basis
    it is not permissible for you to marry him, because he is your uncle, may Allaah guide
    you. It is also haraam for a man to marry his maternal aunt (khaalah), because
    Allaah says (interpretation of the meaning): Forbidden to you (for marriage) are:
    your mothers, your daughters, your sisters, your fathers sisters, your mothers
    sisters [al-Nisa 4:23]. Similarly there is a total and eternal ban
    on women marrying their uncles. And Allaah knows best.