linux-kernel - Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Read in l2cap

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Message-ID: <000000000000559c060621c83e97@google.com>
Date: Tue, 10 Sep 2024 11:43:03 -0700
From: syzbot <syzbot+c12e2f941af1feb5632c@...kaller.appspotmail.com>
To: eadavis@...com, hdanton@...a.com, johan.hedberg@...il.com, 
	linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org, 
	luiz.dentz@...il.com, luiz.von.dentz@...el.com, marcel@...tmann.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Read in
 l2cap_connect (2)

syzbot has bisected this issue to:

commit 5af1f84ed13a416297ab9ced7537f4d5ae7f329a
Author: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
Date:   Thu Aug 3 18:04:51 2023 +0000

    Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12477bc7980000
start commit:   788220eee30d Merge tag 'pm-6.11-rc7' of git://git.kernel.o..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=11477bc7980000
console output: https://syzkaller.appspot.com/x/log.txt?x=16477bc7980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=57042fe37c7ee7c2
dashboard link: https://syzkaller.appspot.com/bug?extid=c12e2f941af1feb5632c
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11da6f29980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1304189f980000

Reported-by: syzbot+c12e2f941af1feb5632c@...kaller.appspotmail.com
Fixes: 5af1f84ed13a ("Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync")

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