> -----Original Message----- > From: Andres Beltran <lkmlabelt@xxxxxxxxx> > Sent: Monday, June 29, 2020 4:02 PM > To: KY Srinivasan <kys@xxxxxxxxxxxxx>; Haiyang Zhang > <haiyangz@xxxxxxxxxxxxx>; Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>; > wei.liu@xxxxxxxxxx > Cc: linux-hyperv@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Michael > Kelley <mikelley@xxxxxxxxxxxxx>; parri.andrea@xxxxxxxxx; Andres Beltran > <lkmlabelt@xxxxxxxxx>; David S . Miller <davem@xxxxxxxxxxxxx>; Jakub > Kicinski <kuba@xxxxxxxxxx>; netdev@xxxxxxxxxxxxxxx > Subject: [PATCH v2 3/3] hv_netvsc: Use vmbus_requestor to generate > transaction IDs for VMBus hardening > > Currently, pointers to guest memory are passed to Hyper-V as > transaction IDs in netvsc. In the face of errors or malicious > behavior in Hyper-V, netvsc should not expose or trust the transaction > IDs returned by Hyper-V to be valid guest memory addresses. Instead, > use small integers generated by vmbus_requestor as requests > (transaction) IDs. > > Cc: David S. Miller <davem@xxxxxxxxxxxxx> > Cc: Jakub Kicinski <kuba@xxxxxxxxxx> > Cc: netdev@xxxxxxxxxxxxxxx > Signed-off-by: Andres Beltran <lkmlabelt@xxxxxxxxx> Reviewed-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
