linux-kernel - Re: [PATCH] usb: gadget: pch

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Message-ID: <7827836d-e42f-b688-625d-89d2027cf3d6@embeddedor.com>
Date:   Wed, 6 Nov 2019 14:35:41 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Pan Bian <bianpan2016@....com>
Cc:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Colin Ian King <colin.king@...onical.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Chuhong Yuan <hslester96@...il.com>,
        USB <linux-usb@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: gadget: pch_udc: fix use after free



On 11/6/19 02:54, Andy Shevchenko wrote:
> On Wed, Nov 6, 2019 at 10:41 AM Pan Bian <bianpan2016@....com> wrote:
>>
>> The next field of the DMA descriptor is written after releasing the
>> descriptor, which may result in a use-after-free issue. Set the value of
>> the field before it is released to fix the bug.
>>
> 
> Had you chance to read the discussion [1]?
> I Cc to Gustavo to hear from him about destiny of the change.
> 

Wow, thanks for reminding me about this thread, Andy.
I had totally forgotten about this for more than two years... :|

Here is the final version:

https://lore.kernel.org/lkml/20191106202821.GA20347@embeddedor/

Thanks
--
Gustavo