From a0c33934fc4fb6dbc89b89271608018767c4101e Mon Sep 17 00:00:00 2001
From: Pierre Schweitzer <pierre@reactos.org>
Date: Fri, 16 Nov 2018 21:12:10 +0100
Subject: [PATCH] [NTOSKRNL] Properly check for negative values in
 IoCheckEaBufferValidity()

CID 1441355, 1441382
---
 ntoskrnl/io/iomgr/util.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ntoskrnl/io/iomgr/util.c b/ntoskrnl/io/iomgr/util.c
index fb56f8d1704..5005e182089 100644
--- a/ntoskrnl/io/iomgr/util.c
+++ b/ntoskrnl/io/iomgr/util.c
@@ -228,7 +228,7 @@ IoCheckEaBufferValidity(IN PFILE_FULL_EA_INFORMATION EaBuffer,
         if (NextEntryOffset == 0)
         {
             /* If we don't overflow! */
-            if (EaLength - ComputedLength < 0)
+            if ((LONG)(EaLength - ComputedLength) < 0)
             {
                 goto FailPath;
             }
@@ -243,7 +243,7 @@ IoCheckEaBufferValidity(IN PFILE_FULL_EA_INFORMATION EaBuffer,
         }
 
         /* Check next entry offset value is positive */
-        if (NextEntryOffset < 0)
+        if ((LONG)NextEntryOffset < 0)
         {
             goto FailPath;
         }