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    SubjectRe: [PATCH] don't allow CAP_NET_ADMIN to load non-netdev kernel modules
    On Fri, Feb 25, 2011 at 10:47 -0800, David Miller wrote:
    > From: Vasiliy Kulikov <segoon@openwall.com>
    > Date: Fri, 25 Feb 2011 18:14:14 +0300
    >
    > > Since a8f80e8ff94ecba629542d9b4b5f5a8ee3eb565c any process with
    > > CAP_NET_ADMIN may load any module from /lib/modules/. This doesn't mean
    > > that CAP_NET_ADMIN is a superset of CAP_SYS_MODULE as modules are limited
    > > to /lib/modules/**. However, CAP_NET_ADMIN capability shouldn't allow
    > > anybody load any module not related to networking.
    >
    > Why go through this naming change, which does break things, instead of
    > simply adding a capability mask tag or similar to modules somehow. You
    > could stick it into a special elf section or similar.
    >
    > Doesn't that make tons more sense than this?

    This is not "simply", adding special section for a single workaround
    seems like an overkill for me - this touches the core (modules'
    internals), which is not related to the initial CAP_* problem at all.

    I'd be happy with not breaking anything, but I don't see any acceptable
    solution.


    Thanks,

    --
    Vasiliy Kulikov
    http://www.openwall.com - bringing security into open computing environments


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