The netlink_rcv_skb function in af_netlink.c in Linux kernel 2.6.14 and 2.6.15 allows local users to cause a denial of service (infinite loop) via a nlmsg_len field of 0.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24202
http://www.vupen.com/english/advisories/2006/0220
http://www.trustix.org/errata/2006/0004
http://www.securityfocus.com/bid/16414