Messages in this thread | | | Subject | Re: thoughts on kernel security issues | From | Arjan van de Ven <> | Date | Wed, 19 Jan 2005 19:55:43 +0100 |
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> I respect you as a kernel developer as long as you're doing preemption > and schedulers; but I honestly think PaX is the better technology, and I > think it's important that the best security technology be in place.
the difference is not that big and only in tradeoffs. eg pax trades virtual address space against protecting a rare occurance (eg where exec shield wouldn't work because of a high executable mapping. That really doesn't happen in normal programs)
> On a final note, isn't PaX the only technology trying to apply NX > protections to kernel space?
Exec Shield does that too but only if your CPU has hardware assist for NX (which all current AMD and most current intel cpus do).
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