spectre v4 : Speculative Store Bypass (CVE-2018-3639) proof of concept for Linux
build: gcc spectre-v4.cpp -o spectre
run: ./spectre
result:
--------attack--------
low than threshold:155
low than threshold:144
low than threshold:133
low than threshold:0
low than threshold:1
--------attack--------
low than threshold:133
low than threshold:0
low than threshold:1
--------attack--------
low than threshold:0
low than threshold:1
Question:
every time I want use the same victim function to get other secret data, it will be failed.
I guess it is because the two instruction will be marked dependent load and store, so it won't speculate the load instruction.
