linux-kernel - Re: [PATCH v4 4/5] mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write

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Date:   Thu, 13 Jul 2023 09:58:34 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     William Zhang <william.zhang@...adcom.com>,
        Broadcom Kernel List <bcm-kernel-feedback-list@...adcom.com>,
        Linux MTD List <linux-mtd@...ts.infradead.org>
Cc:     Miquel Raynal <miquel.raynal@...tlin.com>, f.fainelli@...il.com,
        rafal@...ecki.pl, kursad.oney@...adcom.com,
        joel.peshkin@...adcom.com, computersforpeace@...il.com,
        anand.gore@...adcom.com, dregan@...l.com, kamal.dasu@...adcom.com,
        tomer.yacoby@...adcom.com, dan.beygelman@...adcom.com,
        Florian Fainelli <florian.fainelli@...adcom.com>,
        stable@...r.kernel.org, linux-kernel@...r.kernel.org,
        Vignesh Raghavendra <vigneshr@...com>,
        Richard Weinberger <richard@....at>,
        Kamal Dasu <kdasu.kdev@...il.com>
Subject: Re: [PATCH v4 4/5] mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write

On Thu, 2023-07-06 at 18:29:08 UTC, William Zhang wrote:
> When the oob buffer length is not in multiple of words, the oob write
> function does out-of-bounds read on the oob source buffer at the last
> iteration. Fix that by always checking length limit on the oob buffer
> read and fill with 0xff when reaching the end of the buffer to the oob
> registers.
> 
> Fixes: 27c5b17cd1b1 ("mtd: nand: add NAND driver "library" for Broadcom STB NAND controller")
> Signed-off-by: William Zhang <william.zhang@...adcom.com>
> Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>
> Cc: stable@...r.kernel.org

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.

Miquel