linux-hardening - Re: [PATCH v2 1/2] media: staging/intel-ipu3: css: Fix wrong size comparison

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Date:   Wed, 4 Aug 2021 15:37:42 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     Sakari Ailus <sakari.ailus@...ux.intel.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-kernel@...r.kernel.org, Yong Zhi <yong.zhi@...el.com>,
        Bingbu Cao <bingbu.cao@...el.com>,
        Tianshu Qiu <tian.shu.qiu@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2 1/2] media: staging/intel-ipu3: css: Fix wrong size
 comparison

I missed that you change < sizeof() to <= sizeof()...  Sakari is right
that it should be < sizeof().  <= doesn't work at all ever.  If you
wanted a higher limit then the next limit woule be:

	if (css->fw->size < struct_size(css->fwp, binary_header, 1))

regards,
dan carpenter