In Surah at-Taubah, 9:30, we find the astonishing statement:
While the statement about the Christian doctrine is correct, the claim that "Ezra is the Son of God" is wrong and such a belief has never been a tenet of the Jewish faith. It cannot be found in the Jewish Scriptures nor in the commentaries like Talmud and Mishnah [as far as I know, but please prove me wrong by giving a reference!].
Until then, this is a clear error in the Qur'an.
Further discussion:
Contradictions in the Qur'an
Answering Islam Home Page