Scope: Availability
Impact: DoS: Crash, Exit, or Restart
Notes: NULL pointer dereferences usually result in the failure of the process unless exception handling (on some platforms) is available and implemented. Even when exception handling is being used, it can still be very difficult to return the software to a safe state of operation.
Scope: Integrity, Confidentiality
Impact: Execute Unauthorized Code or Commands, Read Memory, Modify Memory
Notes: In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution.
