linux-kernel - Re: [PATCH] netfilter: ipset: Replace strlcpy with strscpy

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Message-Id: <168729290242.455922.9357942903753232037.b4-ty@chromium.org>
Date:   Tue, 20 Jun 2023 13:28:24 -0700
From:   Kees Cook <keescook@...omium.org>
To:     fw@...len.de, pablo@...filter.org, azeemshaikh38@...il.com,
        kadlec@...filter.org
Cc:     Kees Cook <keescook@...omium.org>, netfilter-devel@...r.kernel.org,
        kuba@...nel.org, pabeni@...hat.com, coreteam@...filter.org,
        linux-hardening@...r.kernel.org, davem@...emloft.net,
        edumazet@...gle.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] netfilter: ipset: Replace strlcpy with strscpy

On Tue, 13 Jun 2023 00:34:37 +0000, Azeem Shaikh wrote:
> strlcpy() reads the entire source buffer first.
> This read may exceed the destination size limit.
> This is both inefficient and can lead to linear read
> overflows if a source string is not NUL-terminated [1].
> In an effort to remove strlcpy() completely [2], replace
> strlcpy() here with strscpy().
> 
> [...]

Since this got Acked and it's a trivial change, I'll take this via the
hardening tree. Thanks!

Applied to for-next/hardening, thanks!

[1/1] netfilter: ipset: Replace strlcpy with strscpy
      https://git.kernel.org/kees/c/0b2fa86361f4

-- 
Kees Cook