From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:49596 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755360AbdIGOra (ORCPT ); Thu, 7 Sep 2017 10:47:30 -0400 Subject: Patch "driver core: bus: Fix a potential double free" has been added to the 3.18-stable tree To: christophe.jaillet@wanadoo.fr, gregkh@linuxfoundation.org Cc: , From: Date: Thu, 07 Sep 2017 16:47:25 +0200 Message-ID: <1504795645214237@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled driver core: bus: Fix a potential double free to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: driver-core-bus-fix-a-potential-double-free.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 0f9b011d3321ca1079c7a46c18cb1956fbdb7bcb Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Tue, 29 Aug 2017 21:23:49 +0200 Subject: driver core: bus: Fix a potential double free From: Christophe JAILLET commit 0f9b011d3321ca1079c7a46c18cb1956fbdb7bcb upstream. The .release function of driver_ktype is 'driver_release()'. This function frees the container_of this kobject. So, this memory must not be freed explicitly in the error handling path of 'bus_add_driver()'. Otherwise a double free will occur. Signed-off-by: Christophe JAILLET Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -722,7 +722,7 @@ int bus_add_driver(struct device_driver out_unregister: kobject_put(&priv->kobj); - kfree(drv->p); + /* drv->p is freed in driver_release() */ drv->p = NULL; out_put_bus: bus_put(bus); Patches currently in stable-queue which might be from christophe.jaillet@wanadoo.fr are queue-3.18/driver-core-bus-fix-a-potential-double-free.patch