diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c
index 954e5c40f473..e785a8a7f1c2 100644
--- a/drivers/tty/vt/vt_ioctl.c
+++ b/drivers/tty/vt/vt_ioctl.c
@@ -694,6 +694,7 @@ int vt_ioctl(struct tty_struct *tty,
 			ret =  -ENXIO;
 		else {
 			arg--;
+			arg = array_index_nospec(arg, MAX_NR_CONSOLES);
 			console_lock();
 			ret = vc_allocate(arg);
 			console_unlock();