The remote host is missing updates announced in advisory TSLSA-2006-0040.
kernel < TSL 3.0 > - New upstream. - SECURITY FIX: SCTP conntrack (ip_conntrack_proto_sctp.c) in netfilter allows remote attackers to cause a denial of service (crash) via a packet without any chunks, which causes a variable to contain an invalid value that is later used to dereference a pointer.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2006-2934 to this issue.
Solution: Update your system with the packages as indicated in the referenced security advisory.