From 2884b249294e3e8fc749bbb81e2a897314fa0818 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Thu, 6 Dec 2012 11:59:53 +1000
Subject: [PATCH] barriers: Don't allow destroying other client's barriers

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
---
 Xi/xibarriers.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Xi/xibarriers.c b/Xi/xibarriers.c
index f16094d45..86e811ea1 100644
--- a/Xi/xibarriers.c
+++ b/Xi/xibarriers.c
@@ -534,6 +534,9 @@ XIDestroyPointerBarrier(ClientPtr client,
         return err;
     }
 
+    if (CLIENT_ID(stuff->barrier) != client->index)
+        return BadAccess;
+
     FreeResource(stuff->barrier, RT_NONE);
     return Success;
 }