Now that ARM’s memory tagging, used extensively by Android ROMs such as GrapheneOS and now also by Apple, is becoming the new norm to aid in improving memory safety, the x86 world can’t sit idly by. As such, Intel and AMD have announced a ChkTag, x86’s version of memory tagging. ChkTag is a set of new and enhanced x86 instructions to detect memory safety violations, such as buffer overflows and misuses of freed memory (use-after-free). ChkTag is designed to be suitable for hardening app...
