linux-kernel - Re: KASAN: use-after-free Read in vhci_hub

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Message-ID: <e312222f-d24e-ad18-1801-e266d6497a6a@kernel.org>
Date:   Thu, 7 Nov 2019 09:54:12 -0700
From:   shuah <shuah@...nel.org>
To:     syzbot <syzbot+600b03e0cf1b73bb23c4@...kaller.appspotmail.com>,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, stable@...r.kernel.org,
        sudipm.mukherjee@...il.com, syzkaller-bugs@...glegroups.com,
        valentina.manea.m@...il.com, shuah <shuah@...nel.org>
Subject: Re: KASAN: use-after-free Read in vhci_hub_control

On 11/7/19 6:42 AM, syzbot wrote:
> syzbot suspects this bug was fixed by commit:
> 
> commit 81f7567c51ad97668d1c3a48e8ecc482e64d4161
> Author: Shuah Khan (Samsung OSG) <shuah@...nel.org>
> Date:   Fri Oct 5 22:17:44 2018 +0000
> 
>      usb: usbip: Fix BUG: KASAN: slab-out-of-bounds in vhci_hub_control()
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14046c2c600000
> start commit:   420f51f4 Merge tag 'arm64-fixes' of 
> git://git.kernel.org/p..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=531a917630d2a492
> dashboard link: 
> https://syzkaller.appspot.com/bug?extid=600b03e0cf1b73bb23c4
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1116710a400000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=119be4ea400000
> 
> If the result looks correct, please mark the bug fixed by replying with:
> 
> #syz fix: usb: usbip: Fix BUG: KASAN: slab-out-of-bounds in 
> vhci_hub_control()
> 
> For information about bisection process see: 
> https://goo.gl/tpsmEJ#bisection
> 

#syz fix: usb: usbip: Fix BUG: KASAN: slab-out-of-bounds in 
vhci_hub_control()