diff -r 741dcdf88ba9 -r c4d65d91ad0c userlibandfileserver/fileserver/shostmassstorage/server/protocol/tscsiblockcmds.cpp
--- a/userlibandfileserver/fileserver/shostmassstorage/server/protocol/tscsiblockcmds.cpp	Mon Mar 08 11:57:08 2010 +0000
+++ b/userlibandfileserver/fileserver/shostmassstorage/server/protocol/tscsiblockcmds.cpp	Sun Mar 14 13:15:32 2010 +0000
@@ -57,7 +57,7 @@
         }
 
     TInt modeDataLength = aPtr[0];
-    if (aPtr.Length() - 1 < modeDataLength)
+    if (aPtr.Length() - 1 > modeDataLength)
         {
         User::Leave(KErrGeneral);
         }
@@ -121,8 +121,8 @@
         User::Leave(KErrGeneral);
         }
     
-    TInt modeDataLength = BigEndian::Get32(&aPtr[0]);
-    if (aPtr.Length() - 2 < modeDataLength)
+    TInt modeDataLength = BigEndian::Get16(&aPtr[0]);
+    if (aPtr.Length() - 2 > modeDataLength)
         {
         User::Leave(KErrGeneral);
         }