linux-hardening - Re: [PATCH] scsi: sym53c8xx: Replace all non-returning strlcpy with strscpy

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Message-ID: <yq1o7m0cg3o.fsf@ca-mkp.ca.oracle.com>
Date:   Wed, 31 May 2023 18:04:51 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Azeem Shaikh <azeemshaikh38@...il.com>
Cc:     Matthew Wilcox <willy@...radead.org>,
        linux-hardening@...r.kernel.org, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Subject: Re: [PATCH] scsi: sym53c8xx: Replace all non-returning strlcpy with
 strscpy


Azeem,

> 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 6.5/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering