The NT kernel-mode driver (aka pstrip.sys) 5.0.1.1 and earlier in EnTech Taiwan PowerStrip 3.84 and earlier allows local users to gain privileges via certain IRP parameters in an IOCTL request to \Device\Powerstrip1 that overwrites portions of memory.

Local Privilege Escalation via Unrestricted Physical Memory Mapping in EnTech Taiwan PowerStrip Driver

The pstrip64.sys driver in EnTech Taiwan PowerStrip <=3.90.736 allows local users to escalate privileges to SYSTEM via a crafted IOCTL request enabling unprivileged users to map arbitrary physical memory into their address space and modify critical kernel structures.