Greetings,
* Bruce Momjian (bruce@momjian.us) wrote:
> On Tue, May 25, 2021 at 05:14:24PM -0400, Stephen Frost wrote:
> > * Bruce Momjian (bruce@momjian.us) wrote:
> > > Yes, I can see that happening. I think occasional leakage of hint bit
> > > changes to be acceptable. We might decide they are all acceptable.
> >
> > I don't think that I agree with the idea that this would ultimately only
> > leak the hint bits- I'm fairly sure that this would make it relatively
> > trivial for an attacker to be able to deduce the contents of the entire
> > 8k page. I don't know that we should be willing to accept that as a
> > part of regular operation (which we generally view crashes as being). I
> > had thought there was something in place to address this though. If
> > not, it does seem like there should be.
>
> Uh, can you please explain more? Would the hint bits leak? In another
> email you said hint bit leaking was OK.
See my recent email, think I clarified it well over there.
Thanks,
Stephen