Joachim Fasting 43fc394a5c grsecurity module: disable EFI runtime services by default ... Enabling EFI runtime services provides a venue for injecting code into the kernel. When grsecurity is enabled, we close this by default by disabling access to EFI runtime services. The upshot of this is that /sys/firmware/efi/efivars will be unavailable by default (and attempts to mount it will fail). This is not strictly a grsecurity related option, it could be made into a general option, but it seems to be of particular interest to grsecurity users (for non-grsecurity users, there are other, more immediate kernel injection attack dangers to contend with anyway).		2016-08-02 10:24:49 +02:00
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manual	grsecurity module: disable EFI runtime services by default	2016-08-02 10:24:49 +02:00