For the NVIDIA Quadro, NVS, and GeForce products, NVIDIA Windows GPU Display Driver R340 before 342.00 and R375 before 375.63 contains a vulnerability in the kernel mode layer (nvlddmkm.sys) handler where a NULL pointer dereference caused by invalid user input may lead to denial of service or potential escalation of privileges.
https://support.lenovo.com/us/en/solutions/LEN-10822