Bringing Stack Clash Protection to Clang / X86 — the Open Source Way

Added on 2023-09-11
Page: https://blog.llvm.org/posts/2021-01-05-stack-clash-protection/
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#llvm #security #stack-clash

Context Stack clash is an attack that dates back to 2017, when the Qualys Research Team released an advisory with a joint blog post. It basically exploits large stack allocation (greater than PAGE_SIZE) that can lead to stack read/write not triggering the stack guard page allocated by the Linux Kernel.