Messages in this thread | | | Date | Wed, 20 Dec 2017 12:13:05 +0200 | From | Jarkko Sakkinen <> | Subject | Re: [intel-sgx-kernel-dev] [PATCH v5 06/11] intel_sgx: driver for Intel Software Guard Extensions |
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On Tue, Dec 19, 2017 at 11:24:55PM +0000, Christopherson, Sean J wrote: > Exposing the token generated by the in-kernel LE doesn't affect the > kernel's power in the slightest, e.g. the kernel doesn't need a LE > to refuse to run an enclave and a privileged user can always load > an out-of-tree driver if they really want to circumvent the kernel's > policies, which is probably easier than stealing the LE's private key.
If the MSRs are read-only, kernel does need an LE in order to launch enclaves if it only has the SIGSTRUCT.
User with abilities to load out-of-tree driver or otherwise modify the running kernel code does not really work as an argument in to any direction.
/Jarkko
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