[Xen-changelog] [xen-unstable] [IA64] Fix security vulnerability

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Alex Williamson <alex.williamson@xxxxxx>
# Date 1200406021 25200
# Node ID 235bef53d5bd04b4ac3b0c443369fa09d5d99e48
# Parent  973221f4d9c76b3efa3ce42dae97a41b03273737
[IA64] Fix security vulnerability

DomU can map any other domain's memory.

Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
---
 xen/arch/ia64/xen/dom0_ops.c |    4 ++++
 1 files changed, 4 insertions(+)

diff -r 973221f4d9c7 -r 235bef53d5bd xen/arch/ia64/xen/dom0_ops.c
--- a/xen/arch/ia64/xen/dom0_ops.c      Tue Jan 15 11:29:15 2008 +0000
+++ b/xen/arch/ia64/xen/dom0_ops.c      Tue Jan 15 07:07:01 2008 -0700
@@ -522,10 +522,14 @@ do_dom0vp_op(unsigned long cmd,
         ret = dom0vp_zap_physmap(d, arg0, (unsigned int)arg1);
         break;
     case IA64_DOM0VP_add_physmap:
+        if (!IS_PRIV(d))
+            return -EPERM;
         ret = dom0vp_add_physmap(d, arg0, arg1, (unsigned int)arg2,
                                  (domid_t)arg3);
         break;
     case IA64_DOM0VP_add_physmap_with_gmfn:
+        if (!IS_PRIV(d))
+            return -EPERM;
         ret = dom0vp_add_physmap_with_gmfn(d, arg0, arg1, (unsigned int)arg2,
                                            (domid_t)arg3);
         break;

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