From 9332550f26bd519b59f696ce9f8a44879729d16c Mon Sep 17 00:00:00 2001 From: npt-1707 Date: Tue, 17 Mar 2026 03:53:49 +0800 Subject: [PATCH] drivers/usb/serial/visor.c: fix null-deref at probe --- drivers/usb/serial/visor.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 60afb39eb7..c53fbb3e0b 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -544,6 +544,11 @@ static int treo_attach(struct usb_serial *serial) (serial->num_interrupt_in == 0)) return 0; + if (serial->num_bulk_in < 2 || serial->num_interrupt_in < 2) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + /* * It appears that Treos and Kyoceras want to use the * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,