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Commit cf6a2fbc authored by Emiliano Ingrassia's avatar Emiliano Ingrassia Committed by Greg Kroah-Hartman
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usb: core: urb: fix URB structure initialization function 



commit 1cd17f7f0def31e3695501c4f86cd3faf8489840 upstream.

Explicitly initialize URB structure urb_list field in usb_init_urb().
This field can be potentially accessed uninitialized and its
initialization is coherent with the usage of list_del_init() in
usb_hcd_unlink_urb_from_ep() and usb_giveback_urb_bh() and its
explicit initialization in usb_hcd_submit_urb() error path.

Signed-off-by: default avatarEmiliano Ingrassia <ingrassia@epigenesys.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20191127160355.GA27196@ingrassia.epigenesys.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8ae04b7d

drivers/usb/core/urb.c

+1 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ void usb_init_urb(struct urb *urb) 
	if (urb) {

		memset(urb, 0, sizeof(*urb));

		kref_init(&urb->kref);

		INIT_LIST_HEAD(&urb->urb_list);

		INIT_LIST_HEAD(&urb->anchor_list);

	}

}