linux-kernel - Re: [PATCH] ftrace: Replace all non-returning strlcpy with strscpy

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Message-Id: <168512314590.441353.7220379541429337017.b4-ty@chromium.org>
Date:   Fri, 26 May 2023 10:45:49 -0700
From:   Kees Cook <keescook@...omium.org>
To:     mhiramat@...nel.org, rostedt@...dmis.org, azeemshaikh38@...il.com
Cc:     Kees Cook <keescook@...omium.org>, linux-hardening@...r.kernel.org,
        linux-trace-kernel@...r.kernel.org, linux-kernel@...r.kernel.org,
        mark.rutland@....com
Subject: Re: [PATCH] ftrace: Replace all non-returning strlcpy with strscpy

On Wed, 17 May 2023 14:53:23 +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().
> No return values were used, so direct replacement is safe.
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] ftrace: Replace all non-returning strlcpy with strscpy
      https://git.kernel.org/kees/c/bd35ef4f612f

-- 
Kees Cook