linux-kernel - [patch] NFC: pn533: use after free in pn533

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Message-ID: <20110708072115.GR18655@shale.localdomain>
Date:	Fri, 8 Jul 2011 10:21:15 +0300
From:	Dan Carpenter <error27@...il.com>
To:	Lauro Ramos Venancio <lauro.venancio@...nbossa.org>
Cc:	"John W. Linville" <linville@...driver.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Aloisio Almeida Jr <aloisio.almeida@...nbossa.org>,
	open list <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org
Subject: [patch] NFC: pn533: use after free in pn533_disconnect()

We freed "dev" on the line before.

Signed-off-by: Dan Carpenter <error27@...il.com>

diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index 0372315..c77e054 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -1596,7 +1596,7 @@ static void pn533_disconnect(struct usb_interface *interface)
 	usb_free_urb(dev->out_urb);
 	kfree(dev);
 
-	nfc_dev_info(&dev->interface->dev, "NXP PN533 NFC device disconnected");
+	nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected");
 }
 
 static struct usb_driver pn533_driver = {
--
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