linux-kernel - Re: KASAN: use-after-free Write in __sco_sock

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Date:   Tue, 15 Dec 2020 23:15:03 -0800
From:   syzbot <syzbot+077eca30d3cb7c02b273@...kaller.appspotmail.com>
To:     anmol.karan123@...il.com, coreteam@...filter.org,
        davem@...emloft.net, devel@...verdev.osuosl.org,
        foxhlchen@...il.com, gregkh@...uxfoundation.org,
        johan.hedberg@...il.com, kaber@...sh.net, kadlec@...ckhole.kfki.hu,
        kuba@...nel.org, linux-bluetooth@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        marcel@...tmann.org, mchehab@...nel.org, mchehab@...pensource.com,
        netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        pablo@...filter.org, syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Write in __sco_sock_close

syzbot suspects this issue was fixed by commit:

commit 6dfccd13db2ff2b709ef60a50163925d477549aa
Author: Anmol Karn <anmol.karan123@...il.com>
Date:   Wed Sep 30 14:18:13 2020 +0000

    Bluetooth: Fix null pointer dereference in hci_event_packet()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14cb845b500000
start commit:   47ec5303 Merge git://git.kernel.org/pub/scm/linux/kernel/g..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=e0c783f658542f35
dashboard link: https://syzkaller.appspot.com/bug?extid=077eca30d3cb7c02b273
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=165a89dc900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=130a8c62900000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: Bluetooth: Fix null pointer dereference in hci_event_packet()

For information about bisection process see: https://goo.gl/tpsmEJ#bisection