diff --git a/fs/file.c b/fs/file.c
index f1b6faa87e3d389957d66e753b713ddba7323822..4ad1eaac9f5d23e41274d0e1c9f435c4dcb10dc0 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -1128,6 +1128,7 @@ __releases(&files->file_lock)
 	 * tables and this condition does not arise without those.
 	 */
 	fdt = files_fdtable(files);
+	fd = array_index_nospec(fd, fdt->max_fds);
 	tofree = fdt->fd[fd];
 	if (!tofree && fd_is_open(fd, fdt)) {
 		err = -EBUSY;