This indicates a possible attempt to exploit a Denial of Service vulnerability in NVIDIA RealityServer.
The vulnerability is the result of a null pointer dereference. It can be exploited by a remote attacker to cause a Denial of Service.
NVIDIA RealityServer version 3.1.1 build 144525.5057
Denial of Service: Remote attackers can crash vulnerable systems.
Refer to the vendor's website for a suggested workaround.