linux-hardening - Re: [PATCH] drm/amd/pm: Replace all non-returning strlcpy with strscpy

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Message-Id: <168478888725.1444594.3121115156306616962.b4-ty@chromium.org>
Date:   Mon, 22 May 2023 13:54:48 -0700
From:   Kees Cook <keescook@...omium.org>
To:     azeemshaikh38@...il.com, evan.quan@....com
Cc:     Kees Cook <keescook@...omium.org>, linux-hardening@...r.kernel.org,
        Xinhui.Pan@....com, dri-devel@...ts.freedesktop.org,
        amd-gfx@...ts.freedesktop.org, airlied@...il.com,
        alexander.deucher@....com, daniel@...ll.ch,
        linux-kernel@...r.kernel.org, christian.koenig@....com
Subject: Re: [PATCH] drm/amd/pm: Replace all non-returning strlcpy with strscpy

On Mon, 22 May 2023 15:52:45 +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] drm/amd/pm: Replace all non-returning strlcpy with strscpy
      https://git.kernel.org/kees/c/0f53b61b1ca0

-- 
Kees Cook