Mandriva Linux Security Advisory – MDKSA-2006:064: MySQL allows local users to bypass logging mechanisms via SQL queries that contain the NULL character, which are not properly handled by the mysql_real_query function.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/45234/MDKSA-2006-064.txt
Source: https://packetstormsecurity.com/files/45234/Mandriva-Linux-Security-Advisory-2006.064.html