linux-kernel - Re: Stricter module param and sysfs permission checks

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Message-ID: <20140320042700.GA11505@redhat.com>
Date:	Thu, 20 Mar 2014 00:27:00 -0400
From:	Dave Jones <davej@...hat.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Joe Perches <joe@...ches.com>, "Theodore Ts'o" <tytso@....edu>,
	Linux Kernel Developers List <linux-kernel@...r.kernel.org>,
	fes@...gle.com, Bjorn Helgaas <bhelgaas@...gle.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Simon Wood <simon@...gewell.org>
Subject: Re: Stricter module param and sysfs permission checks

On Thu, Mar 20, 2014 at 01:43:44PM +1030, Rusty Russell wrote:

 > drivers/mtd/devices/docg3.c:
 >  	__ATTR(f##id##_dps0_protection_key, S_IWUGO, NULL, dps0_insert_key), \
 > 	__ATTR(f##id##_dps1_protection_key, S_IWUGO, NULL, dps1_insert_key), \
 > 
 > drivers/scsi/pm8001/pm8001_ctl.c:
 > static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUGO,
 > 	pm8001_show_update_fw, pm8001_store_update_fw);

Why on earth are these world writable ?

	Dave
 
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