The vulnerability in the driver dlpfde.sys enables a user logged into the system to perform system calls leading to kernel stack overflow, resulting in a system crash, for instance, a BSOD.
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
The product writes data past the end, or before the beginning, of the intended buffer.