From: Kees Cook <keescook@chromium.org>
To: Jeff Johnson <quic_jjohnson@quicinc.com>
Cc: Kalle Valo <kvalo@kernel.org>,
Justin Stitt <justinstitt@google.com>,
ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: Re: [PATCH] ath10k: replace deprecated strncpy with strtomem_pad
Date: Tue, 24 Oct 2023 14:43:09 -0700 [thread overview]
Message-ID: <202310241442.0E90AB9@keescook> (raw)
In-Reply-To: <90328e09-5e48-4bd0-ac67-62a104b6eb76@quicinc.com>
On Tue, Oct 24, 2023 at 07:11:51AM -0700, Jeff Johnson wrote:
> On 10/24/2023 6:03 AM, Kalle Valo wrote:
> > What about using just memcpy() to make it clear it's not really a proper
> > string:
> >
> > arvif->u.ap.ssid_len = 4;
> > memcpy(arvif->u.ap.ssid, "mesh", arvif->u.ap.ssid_len);
> >
>
> In the "changed & BSS_CHANGED_SSID" case that comes soon after this we just
> set the length and use memcpy without clearing the rest of the buffer, so
> doing the same here, as you suggest, would be consistent.
Ah, please ignore my other email asking about memcpy safety -- I'm
reading threads backwards. :)
--
Kees Cook
next prev parent reply other threads:[~2023-10-24 21:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-13 20:33 [PATCH] ath10k: replace deprecated strncpy with strtomem_pad Justin Stitt
2023-10-14 0:58 ` Jeff Johnson
2023-10-18 23:35 ` Kees Cook
2023-10-23 23:40 ` Jeff Johnson
2023-10-24 13:03 ` Kalle Valo
2023-10-24 14:11 ` Jeff Johnson
2023-10-24 21:43 ` Kees Cook [this message]
2023-10-24 23:25 ` Jeff Johnson
2023-10-24 23:40 ` Kees Cook
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