From: Jeffrey Altman <jaltman@your-file-system.com>
Date: Mon, 13 Aug 2012 21:56:02 +0000 (-0400)
Subject: Windows: AFSProcessUserFsRequest NULL dereference
X-Git-Tag: upstream/1.8.0_pre1^2~2100
X-Git-Url: https://git.michaelhowe.org/gitweb/?a=commitdiff_plain;h=aaa1844b8f806513661d16c6429d4d1b890471f2;p=packages%2Fo%2Fopenafs.git

Windows: AFSProcessUserFsRequest NULL dereference

Protect against an Irp with a NULL FsContext2 field.
These represent Irps that are not intended for our device
since they do not have an AFSCcb associated with it.

Change-Id: I2cf6b60e022df5074482544ef3142374149e38d6
Reviewed-on: http://gerrit.openafs.org/7971
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
---

diff --git a/src/WINNT/afsrdr/kernel/lib/AFSFSControl.cpp b/src/WINNT/afsrdr/kernel/lib/AFSFSControl.cpp
index a67e504bd..a8921668d 100644
--- a/src/WINNT/afsrdr/kernel/lib/AFSFSControl.cpp
+++ b/src/WINNT/afsrdr/kernel/lib/AFSFSControl.cpp
@@ -172,6 +172,7 @@ AFSProcessUserFsRequest( IN PIRP Irp)
         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 
         if( pFcb == NULL ||
+            pCcb == NULL ||
             pCcb->DirectoryCB == NULL)
         {