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No, NX precedes Spectre by a long shot. It was originally intended so an attacker couldn't use a buffer overflow to change the PC and execute directly out of t
by jnwatson 2mo ago
No, NX precedes Spectre by a long shot. It was originally intended so an attacker couldn't use a buffer overflow to change the PC and execute directly out of the attacker-controlled buffer.
- adrian_b 2mo agoThat is exactly what the poster to whom you replied said. So Arm did not add another means to disable this kind of speculative execution, after Spectre was discovered, but they just reused the existing NX flag, expanding its functionality.
- samus 2mo agoThat poster wrote about speculative vulnerabilities. But buffer overflows have nothing to do with those.