lkml.org 
[lkml]   [2020]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH v2 3/3] hv_netvsc: Use vmbus_requestor to generate transaction IDs for VMBus hardening
Date


> -----Original Message-----
> From: Andres Beltran <lkmlabelt@gmail.com>
> Sent: Monday, June 29, 2020 4:02 PM
> To: KY Srinivasan <kys@microsoft.com>; Haiyang Zhang
> <haiyangz@microsoft.com>; Stephen Hemminger <sthemmin@microsoft.com>;
> wei.liu@kernel.org
> Cc: linux-hyperv@vger.kernel.org; linux-kernel@vger.kernel.org; Michael
> Kelley <mikelley@microsoft.com>; parri.andrea@gmail.com; Andres Beltran
> <lkmlabelt@gmail.com>; David S . Miller <davem@davemloft.net>; Jakub
> Kicinski <kuba@kernel.org>; netdev@vger.kernel.org
> 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@davemloft.net>
> Cc: Jakub Kicinski <kuba@kernel.org>
> Cc: netdev@vger.kernel.org
> Signed-off-by: Andres Beltran <lkmlabelt@gmail.com>

Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>


\
 
 \ /
  Last update: 2020-06-29 23:34    [W:0.058 / U:3.852 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site