The LDT implementation in the Linux kernel 2.6.25.x before 2.6.25.11 on x86_64 platforms uses an incorrect size for ldt_desc, which allows local users to cause a denial of service (system crash) or possibly gain privileges via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/43979
http://www.securitytracker.com/id?1020544
http://www.securityfocus.com/bid/30351
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.11
http://secunia.com/advisories/31202
http://secunia.com/advisories/31172
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00009.html