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SubjectRe: [PATCH] [SECURITY] suid procs exec'd with bad 0,1,2 fds
On Wed, 5 Aug 1998, David S. Miller wrote:

> Date: Wed, 5 Aug 1998 08:54:21 +0200 (MEST)
> From: R.E.Wolff@BitWizard.nl (Rogier Wolff)
>
> There are already ways to configure your Linux-kernel that make it
> incompatible with this or that. What's the problem with "If you
> need to run the xyz-interpreter, you cannot have the stack's not
> executable feature turned on"? Life's about choices.
>
> It sure is, and the choice we're making is that people should fix the
> applications instead of putting a hack into the mainstream kernel.
>
> Because once the class of exploits is fixed in the applications, the
> kernel hack no longer is relevant. And given this situation, the
> thing we have to keep in mind is how bloody difficult it is take stuff
> out of the kernel.
>
> The golden rule is, if it can be fixed in userspace, make doing it
> there the preferred solution if it makes sense. And here it makes
> sense.
>
> This is the advantage of Linux, because Linus realizes how difficult
> it is to remove something from the kernel, and unlike a lot of
> commercial systems we do control strictly what gets in.
>
> Later,
> David S. Miller
> davem@dm.cobaltmicro.com

Finely a clear argument! :)

I think this issue is also complicated by the fact that we have been in a
development kernel too long so patch makers are torn about which to
support etc..


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