Messages in this thread | | | From | Haiyang Zhang <> | Subject | RE: [PATCH v2 3/3] hv_netvsc: Use vmbus_requestor to generate transaction IDs for VMBus hardening | Date | Mon, 29 Jun 2020 21:33:15 +0000 |
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> -----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>
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