diff --git a/fs/file.c b/fs/file.c
index a3b72aa64f1164380fdaa6524081a4ac956831da..a11e59b5d6026a2e2b195815582f3b48e5b4e331 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -1248,6 +1248,7 @@ __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))
 		goto Ebusy;