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* [PATCH] usb: core: urb: fix URB structure initialization function
@ 2019-11-27 16:03 Emiliano Ingrassia
  0 siblings, 0 replies; only message in thread
From: Emiliano Ingrassia @ 2019-11-27 16:03 UTC (permalink / raw)
  To: Greg Kroah-Hartman; +Cc: linux-usb

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>
---
 drivers/usb/core/urb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 0eab79f82ce4..da923ec17612 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -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);
 	}
 }
--
2.24.0


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2019-11-27 16:03 [PATCH] usb: core: urb: fix URB structure initialization function Emiliano Ingrassia

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