linux-kernel - Re: [PATCH] jfs : fix shift-out-of-bounds in dbUpdatePMap

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Message-ID: <e655b722-f610-99dd-16c1-ed3235860a80@gmail.com>
Date:   Wed, 30 Aug 2023 22:28:58 +0530
From:   Manas Ghandat <ghandatmanas@...il.com>
To:     Dave Kleikamp <dave.kleikamp@...cle.com>, liushixin2@...wei.com
Cc:     jfs-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
        Linux-kernel-mentees@...ts.linuxfoundation.org,
        syzbot+91ad2b52815a08caf4ea@...kaller.appspotmail.com
Subject: Re: [PATCH] jfs : fix shift-out-of-bounds in dbUpdatePMap

I checked for the v6.5. Its fixed there.

On 29/08/23 23:19, Dave Kleikamp wrote:
> On 8/27/23 12:05AM, Manas Ghandat wrote:
>> Currently there is no bound check for number of logical blocks per
>> page (bmp->db_l2nbperpage). Added the required bound check for the
>> calculation of dmap.
>
> This should already be fixed by 11509910c599 ("jfs: jfs_dmap: Validate 
> db_l2nbperpage while mounting")
>
> Can you please verify if this problem still exists in v6.5?
>
> Shaggy
>