memory pages nulling when releasing

[Oliver Fromme]

Nick Borisov <neiro21 at gmail.com> wrote:
 > Dag-Erling Smørgrav <des at des.no> wrote:
 > > "Nick Borisov" <neiro21 at gmail.com> wrote:
 > > > Could you tell me if FreeBSD supports memory page nulling when
 > > > releasing it to prevent unauthorized access to data left in the page
 > > > after it's allocated again.
 > > 
 > > Processes always get zeroed pages from the kernel.  This is the case
 > > for all Unices, and has been for decades.
 > 
 > Well, providing zeroed pages to processes is not quite similar to
 > explicit cleaning of pages after use as some security standards
 > demand.

If that's what you mean, then why not simply use memset()
after use?  (And of course use mlock().)

If that's not what you mean, then please explain _exactly_
what you mean.

Best regards
   Oliver

-- 
Oliver Fromme,  secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing
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