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SubjectRe: [PATCH] Kconfig: Make config Filter access to /dev/mem default y
On Thu, 15 Apr 2010, Michal Svoboda wrote:

> > Have you ever successfully attack by this way? If CONFIG_STRICT_DEVMEM
> > is not set, the /dev/mem access is filtered in pat code.
>
> If that option doesn't add any protection, what's it good for?

Access to /dev/mem being filtered in PAT obviously applies only to x86.

Architectures which don't do such filtering in their respective
phys_mem_access_prot_allowed() still need this option.

--
Jiri Kosina
SUSE Labs, Novell Inc.


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