memory tagging should be a game changer for C and C++; get with the program, @intel and @apple!!pic.twitter.com/z2vXAtTb7z
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A lot of the security of MTE rests on pointer values remaining secret. We’ve seen how difficult this is with ASLR. At least with MTE an attacker generally needs more than one pointer value, though.
I disagree. The cases it provides guaranteed protection against work just as well if pointer values are public knowledge. Only the non-guaranteed/stochastic cases are weakened by attacker having knowledge of pointer values.
Sure. I was using “security” to mean everything MTE can defend against, whether guaranteed or not. (Particularly UAF.)
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