[PATCH] usb: atm: ueagle-atm: fix array-index-out-of-bounds in uea_bind()

Add a bounds check on the global variable modem_index before
using it as an index in sync_wait[] array whose size is NB_MODEM.

Reported-by: [email protected]
Tested-by: [email protected]
Closes: https://syzkaller.appspot.com/bug?extid=92f5bf49bf4ac75223ca
Fixes: b72458a80c75 ("[PATCH] USB: Eagle and ADI 930 usb adsl modem driver")
Signed-off-by: Subasri S <[email protected]>
---
 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);

---
base-commit: f5098b6bae761e346ebcd9da7f95622c04733cff
change-id: 20260802-usb-ueagble-atm-ca29d2bd4189

Best regards,
-- 
Subasri S <[email protected]>