In StNfc_hal_write of hal_st21nfc.cc, there is a possible way to trigger an out of bounds write into global memory due to an incorrect boun…

In StNfc_hal_write of hal_st21nfc.cc, there is a possible way to trigger an out of bounds write into global memory due to an incorrect bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.