Postfix 2.4 before 2.4.9, 2.5 before 2.5.5, and 2.6 before 2.6-20080902, when used with the Linux 2.6 kernel, leaks epoll file descriptors during execution of “non-Postfix” commands, which allows local users to cause a denial of service (application slowdown or exit) via a crafted command, as demonstrated by a command in a .forward file.
lists.opensuse.org/opensuse-security-announce/2008-09/msg00004.html
secunia.com/advisories/31716
secunia.com/advisories/31800
secunia.com/advisories/31982
secunia.com/advisories/31986
secunia.com/advisories/32231
security.gentoo.org/glsa/glsa-200809-09.xml
securityreason.com/securityalert/4239
securitytracker.com/id?1020800
wiki.rpath.com/wiki/Advisories:rPSA-2008-0311
www.mandriva.com/security/advisories?name=MDVSA-2008:190
www.postfix.org/announcements/20080902.html
www.securityfocus.com/archive/1/495894/100/0/threaded
www.securityfocus.com/archive/1/496420/100/0/threaded
www.securityfocus.com/archive/1/498037/100/0/threaded
www.securityfocus.com/bid/30977
www.ubuntu.com/usn/usn-642-1
www.wekk.net/research/CVE-2008-3889/
exchange.xforce.ibmcloud.com/vulnerabilities/44865
www.exploit-db.com/exploits/6472
www.redhat.com/archives/fedora-package-announce/2008-October/msg00271.html
www.redhat.com/archives/fedora-package-announce/2008-October/msg00287.html