linux-kernel - Re: [PATCH] Input: MT - Return directly after a failed kzalloc() in input_mt_init

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: <ZY54hX3VLswwKgMH@google.com>
Date: Thu, 28 Dec 2023 23:43:01 -0800
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Markus Elfring <Markus.Elfring@....de>
Cc: linux-input@...r.kernel.org, kernel-janitors@...r.kernel.org,
	Henrik Rydberg <rydberg@...math.org>,
	LKML <linux-kernel@...r.kernel.org>, cocci@...ia.fr
Subject: Re: [PATCH] Input: MT - Return directly after a failed kzalloc() in
 input_mt_init_slots()

On Tue, Dec 26, 2023 at 08:43:37PM +0100, Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Tue, 26 Dec 2023 20:36:09 +0100
> 
> The kfree() function was called in one case by
> the input_mt_init_slots() function during error handling
> even if the passed variable contained a null pointer.
> This issue was detected by using the Coccinelle software.
> 
> Thus return directly after a call of the function “kzalloc” failed
> at the beginning.

This is not needed. The same arguments as on the patch to
usbtouchscreen.c.

Thanks.

-- 
Dmitry