linux-hardening - Re: [PATCH] scsi: ibmvscsi: Replace all non-returning strlcpy with strscpy

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Message-Id: <168478437624.244538.16463667694387498508.b4-ty@chromium.org>
Date:   Mon, 22 May 2023 12:39:40 -0700
From:   Kees Cook <keescook@...omium.org>
To:     azeemshaikh38@...il.com, tyreld@...ux.ibm.com
Cc:     Kees Cook <keescook@...omium.org>, mpe@...erman.id.au,
        linux-scsi@...r.kernel.org, martin.petersen@...cle.com,
        christophe.leroy@...roup.eu, npiggin@...il.com,
        linux-kernel@...r.kernel.org, jejb@...ux.ibm.com,
        linux-hardening@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] scsi: ibmvscsi: Replace all non-returning strlcpy with strscpy

On Wed, 17 May 2023 14:34:09 +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] scsi: ibmvscsi: Replace all non-returning strlcpy with strscpy
      https://git.kernel.org/kees/c/015f6618194e

-- 
Kees Cook