Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Mon, 21 Nov 2022 20:31:07 -0800
From:   Kees Cook <keescook@chromium.org>
To:     Oliver Neukum <oneukum@suse.com>
Cc:     Gregory Greenman <gregory.greenman@intel.com>,
        linux-wireless@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: Re: warning upon association with latest kernel
Message-ID: <202211212026.6959A4CBBC@keescook>
References: <f6cb6803-602f-91e3-8bd3-3bbbd924731d@suse.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <f6cb6803-602f-91e3-8bd3-3bbbd924731d@suse.com>
Precedence: bulk

On Wed, Nov 09, 2022 at 04:26:39PM +0100, Oliver Neukum wrote:
> I am getting this warning when I connect to my home
> wifi upon boot:
> 
> [...]
> [ 1321.321889] memcpy: detected field-spanning write (size 16) of single field "&compat_event->pointer" at net/wireless/wext-core.c:624 (size 4)

This should be fixed by commit e3e6e1d16a4c ("wifi: wext: use flex array
destination for memcpy()").

> [...]
> Head commit is:
> 
> commit f141df371335645ce29a87d9683a3f79fba7fd67 (origin/master, origin/HEAD)
> Merge: f49b2d89fb10 986d93f55bde
> Author: Linus Torvalds <torvalds@linux-foundation.org>
> Date:   Tue Nov 8 12:30:29 2022 -0800
> 
>     Merge tag 'audit-pr-20221107' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Are you sure that's the same kernel? The stated commit no longer has
"&compat_event->pointer" as a memcpy argument...

-- 
Kees Cook