linux-kernel - Re: [PATCH] clocksource: Fix permissions for available

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.LFD.1.10.0805021635030.6003@apollo.tec.linutronix.de>
Date:	Fri, 2 May 2008 16:36:37 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	John Stultz <johnstul@...ibm.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clocksource: Fix permissions for available_clocksource

On Fri, 2 May 2008, Heiko Carstens wrote:
> From: Heiko Carstens <heiko.carstens@...ibm.com>
> 
> File permissions for
> /sys/devices/system/clocksource/clocksource0/available_clocksource
> are 600 which allows write access. But this is in fact a read only
> file. So change permissions to 400.

Indeed. The question is whether we should make this 444. There is no
harm, when users can read the info. Same applies for the
current_clocksource entry, making it 644 should be fine.
 
Thanks,
	tglx

> Cc: John Stultz <johnstul@...ibm.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>
> ---
>  kernel/time/clocksource.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Index: linux-2.6/kernel/time/clocksource.c
> ===================================================================
> --- linux-2.6.orig/kernel/time/clocksource.c
> +++ linux-2.6/kernel/time/clocksource.c
> @@ -474,7 +474,7 @@ sysfs_show_available_clocksources(struct
>  static SYSDEV_ATTR(current_clocksource, 0600, sysfs_show_current_clocksources,
>  		   sysfs_override_clocksource);
>  
> -static SYSDEV_ATTR(available_clocksource, 0600,
> +static SYSDEV_ATTR(available_clocksource, 0400,
>  		   sysfs_show_available_clocksources, NULL);
>  
>  static struct sysdev_class clocksource_sysclass = {
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/