On Mon, Nov 09, 2020 at 11:04:00AM +0100, Andrea Parri (Microsoft) wrote: > From: Andres Beltran <lkmlabelt@xxxxxxxxx> > > Currently, VMbus drivers use pointers into guest memory as request IDs > for interactions with Hyper-V. To be more robust in the face of errors > or malicious behavior from a compromised Hyper-V, avoid exposing > guest memory addresses to Hyper-V. Also avoid Hyper-V giving back a > bad request ID that is then treated as the address of a guest data > structure with no validation. Instead, encapsulate these memory > addresses and provide small integers as request IDs. > > Signed-off-by: Andres Beltran <lkmlabelt@xxxxxxxxx> > Co-developed-by: Andrea Parri (Microsoft) <parri.andrea@xxxxxxxxx> > Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@xxxxxxxxx> > Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx> Reviewed-by: Wei Liu <wl@xxxxxxx>
