From 0daaf9da75346d91f2d36eaecec52f81d639d217 Mon Sep 17 00:00:00 2001
From: Aleksey Bragin <aleksey@reactos.org>
Date: Fri, 10 Sep 2010 21:13:06 +0000
Subject: [PATCH] [NTOS] - Fix a code typo which led to a security issue when
 the XOR algorithm for the system cookie might actually yield zero. Now it's
 going to loop as long as the cookie is 0, attempting to generate a non-zero
 one.

svn path=/trunk/; revision=48737
---
 reactos/ntoskrnl/ps/thread.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/reactos/ntoskrnl/ps/thread.c b/reactos/ntoskrnl/ps/thread.c
index d05fc8570a8..38459a32794 100644
--- a/reactos/ntoskrnl/ps/thread.c
+++ b/reactos/ntoskrnl/ps/thread.c
@@ -91,7 +91,7 @@ PspUserThreadStartup(IN PKSTART_ROUTINE StartRoutine,
     }
 
     /* Do we have a cookie set yet? */
-    if (!SharedUserData->Cookie)
+    while (!SharedUserData->Cookie)
     {
         LARGE_INTEGER SystemTime;
         ULONG NewCookie;