Sendmail 8.10.0 through 8.11.5, and 8.12.0 beta, allows local users to modify process memory and possibly gain privileges via a large value in the 'category' part of debugger (-d) command line arguments, which is interpreted as a negative number.
https://exchange.xforce.ibmcloud.com/vulnerabilities/7016
http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBTL0112-007
http://www.sendmail.org/8.11.html
http://www.novell.com/linux/security/advisories/2001_028_sendmail_txt.html
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-075.php3
http://www.ciac.org/ciac/bulletins/l-133.shtml
http://www.calderasystems.com/support/security/advisories/CSSA-2001-032.0.txt
http://rhn.redhat.com/errata/RHSA-2001-106.html
http://marc.info/?l=bugtraq&m=99841063100516&w=2
http://download.immunix.org/ImmunixOS/7.0/updates/IMNX-2001-70-032-01
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000412