linux-kernel - Re: [PATCH] NFC: port100: fix use-after-free in port100_send

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: <4078dca8-b5d7-7f84-5605-2f5a98563137@gmail.com>
Date:   Thu, 10 Mar 2022 00:22:08 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzbot+16bcb127fb73baeecb14@...kaller.appspotmail.com
Subject: Re: [PATCH] NFC: port100: fix use-after-free in port100_send_complete

On 3/9/22 21:27, Pavel Skripkin wrote:
> Hi Krzysztof,
> 
> On 3/9/22 12:52, Krzysztof Kozlowski wrote:
>> 
>> 
>> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
>> 
>> Thanks, this looks good. I think I saw similar patterns also in other
>> drivers, e.g. pn533. I will check it later, but if you have spare time,
>> feel free to investigate.
>> 
>> Similar cases (unresolved):
>> https://syzkaller.appspot.com/bug?extid=1dc8b460d6d48d7ef9ca

This one is crazy :) No logs from driver at all. Even can't find where 
probe failure comes from (or even is there any failures...)

>> https://syzkaller.appspot.com/bug?extid=abd2e0dafb481b621869

Looks like this patch fixes it.

>> https://syzkaller.appspot.com/bug?extid=dbec6695a6565a9c6bc0
>> 

This one is already fixed. Fix bisection is bogus, but this bug is not 
reproducible anymore.



With regards,
Pavel Skripkin