How does Fedora clean its RAM..?

Joel Rees joel.rees at gmail.com
Thu Nov 3 02:04:42 UTC 2011


On Wed, Nov 2, 2011 at 10:56 AM, Bruno Wolff III <bruno at wolff.to> wrote:
> On Tue, Nov 01, 2011 at 18:34:15 -0700,
>  Linda McLeod <lindavaldeen at fastmail.fm> wrote:
>> How does Fedora clean its RAM..?
>>
>> Does the system dump what's on unused RAM?..  Does it wait till
>> reboot..?
>> How does it work..?
>>
>> How can the system be bumped-up to the next evolution of
>> RAM-processing..?
>>
>> Is there, or can there be, a continuous wiping-cleaner that instantly
>> cleans RAM the moment its thht-data is dated..?
>
> Unprivileged users don't have access to the previous contents of ram allocated
> to their processes.

You're sure about that? What evidence do you offer? Can you point to
auto-scrub code paths in all the library APIs for freeing memory?

> What is the threat model you are trying to guard against?

Rather than merely imply that such threat models are beyond the scope
of Fedora, wouldn't it be better to refer the OP to a wiki article on
the subject, or to the dev list if there is no wiki article?


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