Messages in this thread | | | Date | Mon, 09 Dec 2013 16:34:24 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH v2] kexec: add sysctl to disable kexec |
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On 12/09/2013 04:16 PM, Kees Cook wrote: > For general-purpose (i.e. distro) kernel builds it makes sense to build with > CONFIG_KEXEC to allow end users to choose what kind of things they want to do > with kexec. However, in the face of trying to lock down a system with such > a kernel, there needs to be a way to disable kexec (much like module loading > can be disabled). Without this, it is too easy for the root user to modify > kernel memory even when CONFIG_STRICT_DEVMEM and modules_disabled are set. > > Signed-off-by: Kees Cook <keescook@chromium.org> > Acked-by: Rik van Riel <riel@redhat.com>
So the logic is to load a crashkernel and then lock down the machine before services, networking etc. are enabled?
-hpa
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