Mailing the story:

Several vulnerabilities were discovered in the saned daemon, a part of the sane package, which allows for a scanner to be used remotely. The IP address of the remote host is only checked after the first communication occurs, which causes the saned.conf restrictions to be ignored for the first connection. As well, a connection that is dropped early can cause Denial of Service issues due to a number of differing factors. Finally, a lack of error checking can cause various other unfavourable actions.