1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c
index a78ad10a119b..73cdc0d633dd 100644
--- a/drivers/tty/vt/vt_ioctl.c
+++ b/drivers/tty/vt/vt_ioctl.c
@@ -32,6 +32,8 @@
 #include <asm/io.h>
 #include <linux/uaccess.h>
 
+#include <linux/nospec.h>
+
 #include <linux/kbd_kern.h>
 #include <linux/vt_kern.h>
 #include <linux/kbd_diacr.h>
@@ -700,6 +702,8 @@ int vt_ioctl(struct tty_struct *tty,
                 if (vsa.console == 0 || vsa.console > MAX_NR_CONSOLES)
                         ret = -ENXIO;
                 else {
+                        vsa.console = array_index_nospec(vsa.console,
+                                                         MAX_NR_CONSOLES + 1);
                         vsa.console--;
                         console_lock();
                         ret = vc_allocate(vsa.console);