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    SubjectRe: [RFC][PATCH] Randomize kernel base address on boot
    On 05/27/2011 02:51 PM, Olivier Galibert wrote:
    > On Fri, May 27, 2011 at 08:17:24PM +0200, Ingo Molnar wrote:
    >> - A root exploit will still not give away the location of the
    >> kernel (assuming module loading has been disabled after bootup),
    >> so a rootkit cannot be installed 'silently' on the system, into
    >> RAM only, evading most offline-storage-checking tools.
    >> With static linking this is not possible: reading the kernel image
    >> as root trivially exposes the kernel's location.
    > There's something I don't get there. If you managed to escalate your
    > priviledges enough that you have physical ram access, there's a
    > billion things you can do to find the kernel, including vector
    > tracing, pattern matching, looking at the page tables, etc.
    > What am I missing?

    Just makes it harder to automate an attack, and more likely that it will
    fail. It's an arms race, of course.


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