diff --git a/fs/file.c b/fs/file.c
index af3968e29ecfe1a49b2d3c36397ac19e4d9a6d53..8d5052d5e7e6562d3f2476c537b3581d5439a0d9 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -1143,6 +1143,7 @@ __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;