The only time it is addressed in the Jewish scriptures is Leviticus 18:22 and 20:13, which a) only involves anal sex between males and b) is for many reasons an unusual prohibition, because the text was edited in 20:13 to address both the insertive and passive partners The passive partner is ignored in 18:22 and most serious scholars I have read believe the inclusion of passive partners reflects later editing by a redactor. The text is also unusual because it uses an idiomatic expression to describe the particular act that does not appear anywhere else in Hebrew scriptures. Based on tradition, however, it absolutely prohibits consensual anal sex between two males.
The Christian scriptures contain at least one clear negative reference to homosexuality in the Romans epistle, although it refers to homosexuality as a punishment for idolatry. The other references appear in Corinthians and Timothy, and use terms that may or may not refer to homosexual activity involving males. There is no clear reference to lesbian sex in either set of scriptures; the prohibition is rabbinic in Orthodox Judaism and by tradition in the Catholic, Orthodox and Protestant Christian traditions.