diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 568b2171f3359..a768069b0f9a4 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -32,6 +32,7 @@
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 #include <linux/mm.h>
+#include <linux/nospec.h>
 #include <linux/string.h>
 #include <linux/init.h>
 #include <linux/slab.h>
@@ -2019,7 +2020,7 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
 		goto reterr;
 	}
 	kbs->kb_string[sizeof(kbs->kb_string)-1] = '\0';
-	i = kbs->kb_func;
+	i = array_index_nospec(kbs->kb_func, MAX_NR_FUNC);
 
 	switch (cmd) {
 	case KDGKBSENT: