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[Xen-devel] information leaking between domains via granted pages?

  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
  • Date: Tue, 4 Mar 2008 14:34:53 +1100
  • Delivery-date: Mon, 03 Mar 2008 19:35:21 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Ach9qLXF4BxOPME/Qtm5dC52XyjJVw==
  • Thread-topic: information leaking between domains via granted pages?
Is there a statement anywhere regarding information that could be leaked
or modified between domains when pages are granted?

Eg, Dom0 sends a network packet to DomU. The network data only uses 64
bytes in the page, but DomU (via a specially crafted netfront driver)
can access and record all the other data in the page...

James


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