Microsoft Windows XP SP3 does not validate addresses in certain IRP handler routines, which allows local users to write data to arbitrary memory locations, and consequently gain privileges, via a crafted address in an IOCTL call, related to (1) the MQAC.sys driver in the MQ Access Control subsystem and (2) the BthPan.sys driver in the Bluetooth Personal Area Networking subsystem.
blogs.technet.com/b/srd/archive/2014/10/14/accessing-risk-for-the-october-2014-security-updates.aspx
packetstormsecurity.com/files/127535/Microsoft-XP-SP3-BthPan.sys-Arbitrary-Write-Privilege-Escalation.html
packetstormsecurity.com/files/127536/Microsoft-XP-SP3-MQAC.sys-Arbitrary-Write-Privilege-Escalation.html
packetstormsecurity.com/files/128674/Microsoft-Bluetooth-Personal-Area-Networking-BthPan.sys-Privilege-Escalation.html
seclists.org/fulldisclosure/2014/Jul/96
seclists.org/fulldisclosure/2014/Jul/97
secunia.com/advisories/60974
www.exploit-db.com/exploits/34112
www.exploit-db.com/exploits/34131
www.exploit-db.com/exploits/34982
www.osvdb.org/109387
www.securityfocus.com/archive/1/532843/100/0/threaded
www.securityfocus.com/archive/1/532844/100/0/threaded
www.securityfocus.com/bid/68764
www.securitytracker.com/id/1031025
docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-062
www.korelogic.com/Resources/Advisories/KL-001-2014-002.txt
www.korelogic.com/Resources/Advisories/KL-001-2014-003.txt