From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Tue, 22 May 2012 06:24:27 +0000 (+0200)
Subject: 	* grub-core/fs/fshelp.c (grub_fshelp_find_file): Set currnode to 0
X-Git-Tag: 2.00~191
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=021d90ecacd4fa16763e5574e1369e9ee92697a1;p=thirdparty%2Fgrub.git

	* grub-core/fs/fshelp.c (grub_fshelp_find_file): Set currnode to 0
	after freeing for safety.
---

diff --git a/ChangeLog b/ChangeLog
index 92a5f811d..059b6e405 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-05-22  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/fs/fshelp.c (grub_fshelp_find_file): Set currnode to 0
+	after freeing for safety.
+
 2012-05-21  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* grub-core/commands/sleep.c (do_print): Add missing grub_refresh.
diff --git a/grub-core/fs/fshelp.c b/grub-core/fs/fshelp.c
index 0d4162ea7..1cb9fcf12 100644
--- a/grub-core/fs/fshelp.c
+++ b/grub-core/fs/fshelp.c
@@ -129,6 +129,7 @@ grub_fshelp_find_file (const char *path, grub_fshelp_node_t rootnode,
 	  if (type != GRUB_FSHELP_DIR)
 	    {
 	      free_node (currnode);
+	      currnode = 0;
 	      return grub_error (GRUB_ERR_BAD_FILE_TYPE, N_("not a directory"));
 	    }
 
@@ -137,6 +138,7 @@ grub_fshelp_find_file (const char *path, grub_fshelp_node_t rootnode,
 	  if (! found)
 	    {
 	      free_node (currnode);
+	      currnode = 0;
 	      if (grub_errno)
 		return grub_errno;
 
@@ -153,12 +155,14 @@ grub_fshelp_find_file (const char *path, grub_fshelp_node_t rootnode,
 		{
 		  free_node (currnode);
 		  free_node (oldnode);
+		  currnode = 0;
 		  return grub_error (GRUB_ERR_SYMLINK_LOOP,
                                      N_("too deep nesting of symlinks"));
 		}
 
 	      symlink = read_symlink (currnode);
 	      free_node (currnode);
+	      currnode = 0;
 
 	      if (!symlink)
 		{