The scm_send function in the scm layer for Linux kernel 2.4.x up to 2.4.28, and 2.6.x up to 2.6.9, allows local users to cause a denial of service (system hang) via crafted auxiliary messages that are passed to the sendmsg function, which causes a deadlock condition.
isec.pl/vulnerabilities/isec-0019-scm.txt
secunia.com/advisories/20162
secunia.com/advisories/20163
secunia.com/advisories/20202
secunia.com/advisories/20338
www.debian.org/security/2006/dsa-1067
www.debian.org/security/2006/dsa-1069
www.debian.org/security/2006/dsa-1070
www.debian.org/security/2006/dsa-1082
www.mandriva.com/security/advisories?name=MDKSA-2005:022
www.novell.com/linux/security/advisories/2004_44_kernel.html
www.redhat.com/support/errata/RHSA-2004-689.html
www.redhat.com/support/errata/RHSA-2005-016.html
www.redhat.com/support/errata/RHSA-2005-017.html
www.securityfocus.com/bid/11921
bugzilla.fedora.us/show_bug.cgi?id=2336
exchange.xforce.ibmcloud.com/vulnerabilities/18483
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11816
www.ubuntu.com/usn/usn-38-1/