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    SubjectRe: Question about /dev/mem and /dev/kmem
    Wichert Akkerman wrote:
    > Previously Jim Nelson wrote:
    >>I was looking at some articles about rootkits on monolithic kernels, and
    >>had a thought. Would a kernel config option to disable write access to
    >>/dev/mem and /dev/kmem be a workable idea?
    > Yes, but not a very useful one since it is an incomplete solution. You
    > can easily do something better using /proc/kernel/cap-bound

    Isn't that /proc/sys/kernel/cap-bound?

    > (like writing 0xFFFCFFFF into it).

    And what stops an attacker who's already gained root from doing a "cat "0" >
    /proc/sys/kernel/cap-bound" ?

    > Wichert.

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