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SubjectRe: kernel ring buffer accessible by users
Julien Oster wrote:
> Of course one could say "then let's just stop writing out anything in
> the kernel buffer that COULD be sensitive", but I think this would
> actually castrate the meaning of such a buffer.

It's also bad security design to try to plug hundreds of potential
leaks, instead of the one common channel they share.

> And there's stillt he possibility to tweak the permissions for
> dmesg so that only a certain group (staff, operator, adm...) can execute
> it, but then setuid root.

Yes, but you'll get quite a few objections to adding yet another
suid root program :-)

- Werner

--
_________________________________________________________________________
/ Werner Almesberger, Buenos Aires, Argentina wa@almesberger.net /
/_http://www.almesberger.net/____________________________________________/
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