[ion] 23698: - If SeCaptureSubjectContextEx is called without a process, at least NULL-initialize the context to catch dereferences of invalid pointers.

Author: ion
Date: Fri Aug 25 05:04:44 2006
New Revision: 23698

URL: http://svn.reactos.org/svn/reactos?rev=23698&view=rev
Log:
- If SeCaptureSubjectContextEx is called without a process, at least NULL-initialize the
context to catch dereferences of invalid pointers.

Modified:
    trunk/reactos/ntoskrnl/se/semgr.c

Modified: trunk/reactos/ntoskrnl/se/semgr.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/se/semgr.c?rev=23…
==============================================================================
--- trunk/reactos/ntoskrnl/se/semgr.c (original)
+++ trunk/reactos/ntoskrnl/se/semgr.c Fri Aug 25 05:04:44 2006
@@ -426,7 +426,13 @@
     PAGED_CODE();
 
     /* ROS HACK */
-    if (!Process) return;
+    if (!Process)
+    {
+        SubjectContext->PrimaryToken = NULL;
+        SubjectContext->ProcessAuditId  = 0;
+        SubjectContext->ClientToken = NULL;
+        return;
+    }
 
     /* Save the unique ID */
     SubjectContext->ProcessAuditId = Process->UniqueProcessId;