> As described in Section 3, our prototype uses a loadable kernel module to [allow the GPU to monitor the keyboard buffer]. We should note that this choice was made only for convenience, and the same stealthy approaches that are typically used for the installation of kernel-level rootkits can be employed, e.g.,by exploiting a vulnerability and injecting malicious code directly into the kernel.

I'm not a security expert, so could the binary kernel module for the NVIDIA driver be exploited for this effect?