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    SubjectRe: thoughts on kernel security issues
    On Tue, 25 Jan 2005 13:37:10 -0500, John Richard Moser
    <> wrote:
    > Hash: SHA1
    > Linus Torvalds wrote:
    > >
    > > On Tue, 25 Jan 2005, John Richard Moser wrote:
    > >
    > >>It's kind of like locking your front door, or your back door. If one is
    > >>locked and the other other is still wide open, then you might as well
    > >>not even have doors. If you lock both, then you (finally) create a
    > >>problem for an intruder.
    > >>
    > >>That is to say, patch A will apply and work without B; patch B will
    > >>apply and work without patch A; but there's no real gain from using
    > >>either without the other.
    > >
    > >
    > > Sure there is. There's the gain that if you lock the front door but not
    > > the back door, somebody who goes door-to-door, opportunistically knocking
    > > on them and testing them, _will_ be discouraged by locking the front door.
    > >
    > In the real world yes. On the computer, the front and back doors are
    > half-consumed by a short-path wormhole that places them right next to
    > eachother, so not really. :)

    Then one might argue that doing any security patches is meaningless
    because, as with bugs, there will always be some other hole not
    covered by both A and B so why bother?

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