RE: [PATCH] scsi: storvsc: Add validation for untrusted Hyper-V values

[Michael Kelley]

From: Andres Beltran <lkmlabelt@xxxxxxxxx> Sent: Monday, July 6, 2020 9:09 AM
> 
> For additional robustness in the face of Hyper-V errors or malicious
> behavior, validate all values that originate from packets that
> Hyper-V has sent to the guest. Ensure that invalid values cannot
> cause data being copied out of the bounds of the source buffer
> when calling memcpy. Ensure that outgoing packets do not have any
> leftover guest memory that has not been zeroed out.
> 
> Cc: James E.J. Bottomley <jejb@xxxxxxxxxxxxx>
> Cc: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
> Cc: linux-scsi@xxxxxxxxxxxxxxx
> Signed-off-by: Andres Beltran <lkmlabelt@xxxxxxxxx>
> ---
>  drivers/scsi/storvsc_drv.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 

Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>