Security

Pointer Authentication Codes (PAC)

Pointer Authentication Codes (PAC) are cryptographic signatures a processor stores in the spare bits of a pointer and checks before use, so forged code pointers crash the program instead of redirecting it.

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What Is Pointer Authentication? Apple PAC Explained

What is pointer authentication? How Apple PAC signs pointers to stop memory exploits, what a PAC bypass does, and why low CVSS scores mislead.

beginner 5 min read

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