From cb1b5b67dbd503ac692d278a32d9d569e49456b7 Mon Sep 17 00:00:00 2001
From: szaka <szaka>
Date: Mon, 30 Mar 2009 10:57:34 +0000
Subject: [PATCH] fix potential heap corruption when allocating an extent mft
 record

---
 libntfs-3g/mft.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libntfs-3g/mft.c b/libntfs-3g/mft.c
index 8158f240..dc47f61f 100644
--- a/libntfs-3g/mft.c
+++ b/libntfs-3g/mft.c
@@ -1459,7 +1459,7 @@ found_free_rec:
 			free(ni);
 			goto undo_mftbmp_alloc;
 		}
-		if (base_ni->extent_nis) {
+		if (base_ni->nr_extents) {
 			memcpy(extent_nis, base_ni->extent_nis,
 					i - 4 * sizeof(ntfs_inode *));
 			free(base_ni->extent_nis);
@@ -1761,7 +1761,7 @@ found_free_rec:
 				free(ni);
 				goto undo_mftbmp_alloc;
 			}
-			if (base_ni->extent_nis) {
+			if (base_ni->nr_extents) {
 				memcpy(extent_nis, base_ni->extent_nis,
 						i - 4 * sizeof(ntfs_inode *));
 				free(base_ni->extent_nis);