From 1b9fb31f7db7882d475bdc8b335403e8eaabf1ef Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 13 Jan 2014 11:29:23 +0100 Subject: [PATCH] usb: core: check for valid id_table when using the RefId feature When implementing the RefId feature, it was missed that id_tables can be NULL under special circumstances. Bail out in that case. Signed-off-by: Wolfram Sang Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/driver.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 620a0baf103e..5d01558cef66 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -73,6 +73,9 @@ ssize_t usb_store_new_id(struct usb_dynids *dynids, if (fields > 4) { const struct usb_device_id *id = id_table; + if (!id) + return -ENODEV; + for (; id->match_flags; id++) if (id->idVendor == refVendor && id->idProduct == refProduct) break;