Re: [PATCH V5 0/5] KVM: X86: Introducing ROE Protection Kernel Hardening

[Igor Stoppa]

Hi,

On 26/10/2018 16:12, Ahmed Abd El Mawgood wrote:

> This is the 5th version which is 4th version with minor fixes. ROE is a
> hypercall that enables host operating system to restrict guest's access to its
> own memory. This will provide a hardening mechanism that can be used to stop
> rootkits from manipulating kernel static data structures and code. Once a memory
> region is protected the guest kernel can't even request undoing the protection.

This is very interesting, because it seems a very good match to the work 
I'm doing, for supporting the creation of more targets for protection:

https://www.openwall.com/lists/kernel-hardening/2018/10/23/3

In my case the protection would extend also to write-rate type of data.
There is an open problem of identifying legitimate write-rare 
operations, however it should be possible to provide at least a certain 
degree of confidence.

--

igor