[throwaway421967]

I don't get it, what's special about these numbers?

[rsaxvc]

Takes many bit flips to go from one pattern to another.

[throwaway421967]

If that is the only constraint, wouldn't the goal be to be as far as possible from the only success state?

the distance between success and failure is 28

[themoonisachees]

Maybe, but in practice malware that makes sudo always fail is also bad. At the same time, getting 28 precise distance from row hammer is basically impossible.

[jareklupinski]

i think their bitfields seem specifically chosen to mitigate rowhammer attacks (no repeating elements)?