Advanced
Assembly Language
Q100 / 100
What is the Meltdown vulnerability in terms of assembly?
Correct! Well done.
Incorrect.
The correct answer is B) An exploit using speculative execution to transiently access kernel memory across privilege boundaries, then inferring it via cache timing
B
Correct Answer
An exploit using speculative execution to transiently access kernel memory across privilege boundaries, then inferring it via cache timing
Explanation
Meltdown: user-mode code reads kernel address speculatively before the permission check raises an exception. Cache timing reveals the value. Fixed by KPTI (kernel page-table isolation).
Progress
100/100