diff --git a/ChangeLog b/ChangeLog
index 29c5c27fa..2a81be00b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2013-09-23  Massimo Maggi <me@massimo-maggi.eu>
+
+	* grub-core/fs/zfs/zfs.c (check_pool_label): Check nvlist.
+
 2013-09-23  Tim Hardeck  <thardeck>
 
 	* util/grub.d/10_hurd.in: Filter out character for the class.
diff --git a/grub-core/fs/zfs/zfs.c b/grub-core/fs/zfs/zfs.c
index 7302b0af5..dea231fbd 100644
--- a/grub-core/fs/zfs/zfs.c
+++ b/grub-core/fs/zfs/zfs.c
@@ -969,6 +969,9 @@ check_pool_label (struct grub_zfs_data *data,
   grub_uint64_t version;
   int found;
   grub_err_t err;
+  grub_zfs_endian_t endian;
+  vdev_phys_t *phys;
+  zio_cksum_t emptycksum;
 
   *inserted = 0;
 
@@ -976,6 +979,25 @@ check_pool_label (struct grub_zfs_data *data,
   if (err)
     return err;
 
+  phys = (vdev_phys_t*) nvlist;
+  if (grub_zfs_to_cpu64 (phys->vp_zbt.zec_magic,
+			 GRUB_ZFS_LITTLE_ENDIAN)
+      == ZEC_MAGIC)
+    endian = GRUB_ZFS_LITTLE_ENDIAN;
+  else if (grub_zfs_to_cpu64 (phys->vp_zbt.zec_magic,
+			      GRUB_ZFS_BIG_ENDIAN)
+	   == ZEC_MAGIC)
+    endian = GRUB_ZFS_BIG_ENDIAN;
+  else
+    return grub_error (GRUB_ERR_BAD_FS,
+		       "bad vdev_phys_t.vp_zbt.zec_magic number");
+  /* Now check the integrity of the vdev_phys_t structure though checksum.  */
+  ZIO_SET_CHECKSUM(&emptycksum, diskdesc->vdev_phys_sector << 9, 0, 0, 0);
+  err = zio_checksum_verify (emptycksum, ZIO_CHECKSUM_LABEL, endian,
+			     nvlist, VDEV_PHYS_SIZE);
+  if (err)
+    return err;
+
   grub_dprintf ("zfs", "check 2 passed\n");
 
   found = grub_zfs_nvlist_lookup_uint64 (nvlist, ZPOOL_CONFIG_POOL_STATE,