Mandriva Security Advisory – A bug in the way that SpamAssassin processes HTML emails containing URIs was discovered in versions 3.1.x. A carefully crafted mail message could make SpamAssassin consume significant amounts of CPU resources that could delay or prevent the delivery of mail if a number of these messages were sent at once. SpamAssassin has been upgraded to version 3.1.8 to correct this problem, and other upstream bugs. In addition, an invalid path setting in local.cf for the auto_whitelist_path has been fixed for Mandriva 2007.0.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/54713/MDKSA-2007-049.txt
Source: https://packetstormsecurity.com/files/54713/Mandriva-Linux-Security-Advisory-2007.049.html