This module exploits a vulnerability in Rivatuner's core (Rivatuner*.sys, RTCore*.sys), a driver used by hardware tweaking apps Rivatuner, MSI Afterburner, EVGA Precision X (and possibly others). During app operation, the driver is loaded and used to read and write physical memory, MSR registers, io ports, etc. This module abuses said functionality to escalate privileges.
This module exploits a race condition vulnerability in the Linux Kernel via MAP_PRIVATE COW. The bug relies in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system.