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Comment by srcmap | Hacker News Reader

From the papers, these two bugs are also exploitable from ARM.

Does it mean a hacked IOS/Android app can also (in theory) sniff the password enter in system dialog as demo in the video?

   Realtime password input - https://www.youtube.com/watch?v=yTpXqyRYcBM

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It depends. From what I'm reading: generally, with apparently one possible exception, Meltdown doesn't work on ARM. Generally, both variants of Spectre do.

Important to differentiate between ARM the company, the instruction set architecture(s) and the specific implementation of those ISAs. The licensable nature of ARM means there very likely are (possibly undiscovered) implementations of the ARM ISAs floating around which are susceptible to Meltdown.

I was under the impression that they generally license the IP cores (or at least some IP blocks) to implement the ISA and downstream vendors don't implement those differently.

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