Forwarded: [PATCH] usb: Fix UBSAN out-of-bounds

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Subject: [PATCH] usb: Fix UBSAN out-of-bounds
Author: subasris1210@gmail.com

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git 5d5fd841c34649f1b09220fe58e59dffd61c447d

---
 drivers/usb/atm/ueagle-atm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c
index 4266a0cb7e3b..61723e7ab351 100644
--- a/drivers/usb/atm/ueagle-atm.c
+++ b/drivers/usb/atm/ueagle-atm.c
@@ -2463,7 +2463,8 @@ static int uea_bind(struct usbatm_data *usbatm, struct usb_interface *intf,
 	if (ifnum != UEA_INTR_IFACE_NO)
 		return -ENODEV;
 
-	usbatm->flags = (sync_wait[modem_index] ? 0 : UDSL_SKIP_HEAVY_INIT);
+	usbatm->flags = (modem_index < NB_MODEM && sync_wait[modem_index]) ?
+			 0 : UDSL_SKIP_HEAVY_INIT;
 
 	/* interface 1 is for outbound traffic */
 	ret = claim_interface(usb, usbatm, UEA_US_IFACE_NO);
-- 
2.43.0