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usb: core: urb: fix URB structure initialization function

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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: Emiliano Ingrassia <ingrassia@epigenesys.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20191127160355.GA27196@ingrassia.epigenesys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Emiliano Ingrassia 2019-11-27 17:03:55 +01:00 committed by Greg Kroah-Hartman
parent 72e96b95be
commit d262c1a449
1 changed files with 1 additions and 0 deletions
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1
drivers/usb/core/urb.c
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@ -40,6 +40,7 @@ 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);
}
}