1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index 33f83fee9fae..a57bb5ab761c 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -2709,6 +2709,8 @@ cy_ioctl(struct tty_struct *tty,
                 break;
 #ifndef CONFIG_CYZ_INTR
         case CYZSETPOLLCYCLE:
+                if (arg > LONG_MAX / HZ)
+                        return -ENODEV;
                 cyz_polling_cycle = (arg * HZ) / 1000;
                 break;
         case CYZGETPOLLCYCLE: