On Thu, May 06, 2021 at 05:49:45PM +0000, Wei Liu wrote: > On Thu, Apr 08, 2021 at 06:14:39PM +0200, Andrea Parri (Microsoft) wrote: > > From: Andres Beltran <lkmlabelt@xxxxxxxxx> > > > > Pointers to ring-buffer packets sent by Hyper-V are used within the > > guest VM. Hyper-V can send packets with erroneous values or modify > > packet fields after they are processed by the guest. To defend > > against these scenarios, return a copy of the incoming VMBus packet > > after validating its length and offset fields in hv_pkt_iter_first(). > > In this way, the packet can no longer be modified by the host. > > > > 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> > > --- > > drivers/hv/channel.c | 9 ++-- > > drivers/hv/hv_fcopy.c | 1 + > > drivers/hv/hv_kvp.c | 1 + > > drivers/hv/hyperv_vmbus.h | 2 +- > > drivers/hv/ring_buffer.c | 82 ++++++++++++++++++++++++++----- > > drivers/net/hyperv/hyperv_net.h | 7 +++ > > drivers/net/hyperv/netvsc.c | 2 + > > drivers/net/hyperv/rndis_filter.c | 2 + > > drivers/scsi/storvsc_drv.c | 10 ++++ > > include/linux/hyperv.h | 48 +++++++++++++++--- > > net/vmw_vsock/hyperv_transport.c | 4 +- > > 11 files changed, 143 insertions(+), 25 deletions(-) > > In theory this patch needs acks from network and scsi maintainers, but > the changes are so small and specific to Hyper-V drivers. In the > interest of making progress, I will be picking up this patch shortly > unless I hear objections. Applied to hyperv-next. Wei.
