The ipv6_getsockopt_sticky function in net/ipv6/ipv6_sockglue.c in the Linux kernel before 2.6.20.2 allows local users to read arbitrary kernel memory via certain getsockopt calls that trigger a NULL dereference.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10015
https://issues.rpath.com/browse/RPL-1153
http://www.wslabi.com/wabisabilabi/initPublishedBid.do?
http://www.vupen.com/english/advisories/2007/0907
http://www.ubuntu.com/usn/usn-489-1
http://www.ubuntu.com/usn/usn-486-1
http://www.securityfocus.com/archive/1/471457
http://www.redhat.com/support/errata/RHSA-2007-0169.html
http://www.mandriva.com/security/advisories?name=MDKSA-2007:078
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.2
http://www.kb.cert.org/vuls/id/920689
http://secunia.com/advisories/26139
http://secunia.com/advisories/26133
http://secunia.com/advisories/25691
http://secunia.com/advisories/25099
http://secunia.com/advisories/25080
http://secunia.com/advisories/24901
http://secunia.com/advisories/24777
http://secunia.com/advisories/24518
http://secunia.com/advisories/24493
http://lists.suse.com/archive/suse-security-announce/2007-May/0001.html
http://fedoranews.org/cms/node/2788