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

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Message-ID: <20230620163325.35c9203c@gandalf.local.home>
Date:   Tue, 20 Jun 2023 16:33:25 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     mhiramat@...nel.org, ebiggers@...nel.org, azeemshaikh38@...il.com,
        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 Tue, 20 Jun 2023 13:28:26 -0700
Kees Cook <keescook@...omium.org> wrote:

> 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
> 

I was going to add this to my queue.

-- Steve