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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Crashing the process each time? Seems dubious. That said, 4 bits of tag *is* pretty weak.
If large classes of attacks you simply don't control the tag. For example with sequential buffer overflows. To control the tag you generally need to first have some way to overwrite memory containing a pointer, or be able to have >48-bit random-access (not seq. access) offets.
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