1.0.07 release

[Ventoy.git] / GRUB2 / grub-2.04 / grub-core / fs / fat.c

diff --git a/GRUB2/grub-2.04/grub-core/fs/fat.c b/GRUB2/grub-2.04/grub-core/fs/fat.c
index 2b26a8cb2ed086b99d6a43231008152d0da55f2d..6338d49e8df1894f2adcbbaccd00105cb862a7fc 100644 (file)
--- a/GRUB2/grub-2.04/grub-core/fs/fat.c
+++ b/GRUB2/grub-2.04/grub-core/fs/fat.c
@@ -558,7 +558,7 @@ grub_fat_read_data (grub_disk_t disk, grub_fshelp_node_t node,
          if (next_cluster >= node->data->cluster_eof_mark)
            return ret;
 
-         if (next_cluster < 2 || next_cluster >= node->data->num_clusters)
+         if (next_cluster < 2 || (next_cluster - 2) >= node->data->num_clusters)
            {
              grub_error (GRUB_ERR_BAD_FS, "invalid cluster %u",
                          next_cluster);
@@ -1409,7 +1409,7 @@ int grub_fat_get_file_chunk(grub_uint64_t part_start, grub_file_t file, ventoy_i
                 return 0;
             }
 
-            if (next_cluster < 2 || next_cluster >= node->data->num_clusters)
+            if (next_cluster < 2 || (next_cluster - 2) >= node->data->num_clusters)
             {
                 grub_error (GRUB_ERR_BAD_FS, "invalid cluster %u", next_cluster);
                 return -1;