[Xen-changelog] [xen-3.1-testing] [IA64] Fix security vulnerability

["Xen patchbot-3.1-testing" <patchbot-3.1-testing@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1200664392 0
# Node ID aff7d16b583dbf4a6d17adc008996497d7353454
# Parent  b17dfd182f7c4bda5417e39f5d1c9ee01273ec12
[IA64] Fix security vulnerability

DomU can map any other domain's memory.

Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
xen-unstable changeset:   16719:235bef53d5bd04b4ac3b0c443369fa09d5d99e48
xen-unstable date:        Tue Jan 15 07:07:01 2008 -0700
---
 xen/arch/ia64/xen/dom0_ops.c |    4 ++++
 1 files changed, 4 insertions(+)

diff -r b17dfd182f7c -r aff7d16b583d xen/arch/ia64/xen/dom0_ops.c
--- a/xen/arch/ia64/xen/dom0_ops.c      Thu Jan 17 15:05:38 2008 +0000
+++ b/xen/arch/ia64/xen/dom0_ops.c      Fri Jan 18 13:53:12 2008 +0000
@@ -420,10 +420,14 @@ 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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