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    SubjectRO/NX protection for loadable kernel modules
    Peter, anyone? What is the state of this? I can see it in the tip tree,
    but it doesn't appear associated with a branch. What will it take to
    get this into Linus's tree?

    http://git.kernel.org/?p=linux/kernel/git/x86/linux-2.6-tip.git;a=commitdiff;h=65187d24fa3ef60f691f847c792e8eaca7e19251

    This feature is needed before the function-pointer const-ification patches
    will really have any meaning.

    Thanks,

    -Kees

    On Tue, Oct 19, 2010 at 09:45:39PM -0700, Kees Cook wrote:
    > On Mon, Feb 08, 2010 at 11:59:44AM +1030, Rusty Russell wrote:
    > > On Tue, 2 Feb 2010 04:36:49 pm H. Peter Anvin wrote:
    > > > On 02/01/2010 07:59 PM, Rusty Russell wrote:
    > > > > On Tue, 2 Feb 2010 10:09:53 am Siarhei Liakh wrote:
    > > > >> This patch is a logical extension of the protection provided by
    > > > >> CONFIG_DEBUG_RODATA to LKMs. The protection is provided by splitting
    > > > >> module_core and module_init into three logical parts each and setting
    > > > >> appropriate page access permissions for each individual section:
    > > > >>
    > > > >> 1. Code: RO+X
    > > > >> 2. RO data: RO+NX
    > > > >> 3. RW data: RW+NX
    > > > >
    > > > > Thanks, applied!
    > > >
    > > > I also applied this to the -tip tree... do you prefer to carry it or
    > > > should I leave it as is?
    > >
    > > I'm always happy for you to do my work for me! There are no other module
    > > patches likely to conflict.
    > >
    > > Acked-by: Rusty Russell <rusty@rustcorp.com.au>
    >
    > Sorry for losing track, but where did this patch end up? I don't see it
    > in any of the trees I've looked in.

    --
    Kees Cook
    Ubuntu Security Team


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