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I think Meltdown can be best characterised as being the same process that leaks and retrieves the information. The bug being that a process is able to leak dat
by caf 9y ago
I think Meltdown can be best characterised as being the same process that leaks and retrieves the information. The bug being that a process is able to leak data into the micro-architectural state that it isn't allowed to read directly.
- cperciva 9y agoFair enough. The point remains, information is leaking into the microarchitectural state and then being extracted from there -- quite different from earlier attacks which simply exploited the fact that the microarchitecture resulted in certain operations during a cryptographic computation being faster or slower depending on the data being handled.