linux-kernel - Re: [PATCH] exfat: Fix use after free in exfat_load_upcase

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200609091014.GA529192@kroah.com>
Date:   Tue, 9 Jun 2020 11:10:14 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Markus Elfring <Markus.Elfring@....de>
Cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        linux-fsdevel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Namjae Jeon <namjae.jeon@...sung.com>,
        Sungjong Seo <sj1557.seo@...sung.com>,
        Tetsuhiro Kohada <kohada.t2@...il.com>
Subject: Re: [PATCH] exfat: Fix use after free in exfat_load_upcase_table()

On Mon, Jun 08, 2020 at 05:07:33PM +0200, Markus Elfring wrote:
> > This code calls brelse(bh) and then dereferences "bh" on the next line
> > resulting in a possible use after free.
> 
> There is an unfortunate function call sequence.
> 
> 
> > The brelse() should just be moved down a line.
> 
> How do you think about a wording variant like the following?
> 
>    Thus move a call of the function “brelse” one line down.
> 
> 
> Would you like to omit a word from the patch subject so that
> a typo will be avoided there?

Hi,

This is the semi-friendly patch-bot of Greg Kroah-Hartman.

Markus, you seem to have sent a nonsensical or otherwise pointless
review comment to a patch submission on a Linux kernel developer mailing
list.  I strongly suggest that you not do this anymore.  Please do not
bother developers who are actively working to produce patches and
features with comments that, in the end, are a waste of time.

Patch submitter, please ignore Markus's suggestion; you do not need to
follow it at all.  The person/bot/AI that sent it is being ignored by
almost all Linux kernel maintainers for having a persistent pattern of
behavior of producing distracting and pointless commentary, and
inability to adapt to feedback.  Please feel free to also ignore emails
from them.

thanks,

greg k-h's patch email bot