linux-kernel - Re: [PATCH v2] tracing/boot: Replace strlcpy with strscpy

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Message-Id: <168729290245.455922.11993639418267016143.b4-ty@chromium.org>
Date:   Tue, 20 Jun 2023 13:28:26 -0700
From:   Kees Cook <keescook@...omium.org>
To:     mhiramat@...nel.org, ebiggers@...nel.org, rostedt@...dmis.org,
        azeemshaikh38@...il.com
Cc:     Kees Cook <keescook@...omium.org>,
        linux-trace-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] tracing/boot: Replace strlcpy with strscpy

On Thu, 15 Jun 2023 18:04:20 +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().
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] tracing/boot: Replace strlcpy with strscpy
      https://git.kernel.org/kees/c/b1c38314f756

-- 
Kees Cook