linux-kernel - Re: [PATCH 3.12 140/176] gpio: sysfs: fix gpio device-attribute leak

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]

Date:	Wed, 28 Jan 2015 17:10:07 +0100
From:	Johan Hovold <johan@...nel.org>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	stable@...r.kernel.org, linux-kernel@...r.kernel.org,
	Johan Hovold <johan@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH 3.12 140/176] gpio: sysfs: fix gpio device-attribute leak

On Wed, Jan 28, 2015 at 03:29:30PM +0100, Jiri Slaby wrote:
> From: Johan Hovold <johan@...nel.org>
> 
> 3.12-stable review patch.  If anyone has any objections, please let me know.
> 
> ===============
> 
> commit 0915e6feb38de8d3601819992a5bd050201a56fa upstream.
> 
> The gpio device attributes were never destroyed when the gpio was
> unexported (or on export failures).
> 
> Use device_create_with_groups() to create the default device attributes
> of the gpio class device. Note that this also fixes the
> attribute-creation race with userspace for these attributes.
> 
> Remove contingent attributes in export error path and on unexport.
> 
> Fixes: d8f388d8dc8d ("gpio: sysfs interface")
> Signed-off-by: Johan Hovold <johan@...nel.org>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> Signed-off-by: Jiri Slaby <jslaby@...e.cz>

There was a mistake in the 3.14 (and 3.12) backport. A fixed v2 backport
has been posted in this thread:

	https://marc.info/?l=linux-kernel&m=142241055931689&w=2

Johan
--
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/