linux-kernel - Re: [PATCH v4] f2fs: avoid out-of-range memory access

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Message-ID: <ebf31e70-b87b-ea26-c3e9-99775cea69af@huawei.com>
Date:   Mon, 8 Jul 2019 14:30:54 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Ocean Chen <oceanchen@...gle.com>, <jaegeuk@...nel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4] f2fs: avoid out-of-range memory access

On 2019/7/8 12:34, Ocean Chen wrote:
> blkoff_off might over 512 due to fs corrupt or security
> vulnerability. That should be checked before being using.
> 
> Use ENTRIES_IN_SUM to protect invalid value in cur_data_blkoff.
> 
> Signed-off-by: Ocean Chen <oceanchen@...gle.com>

Reviewed-by: Chao Yu <yuchao0@...wei.com>

Thanks,