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

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Date:   Sun, 10 Sep 2023 15:43:38 -0700
From:   syzbot <syzbot+dec4d528fb7a7c5d8ce3@...kaller.appspotmail.com>
To:     eadavis@...a.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, pav@....fi, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Write in __sco_sock_close

syzbot has bisected this issue to:

commit 94d9ba9f9888b748d4abd2aa1547af56ae85f772
Author: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
Date:   Wed Aug 9 23:49:33 2023 +0000

    Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=124d6578680000
start commit:   99d99825fc07 Merge tag 'nfs-for-6.6-1' of git://git.linux-..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=114d6578680000
console output: https://syzkaller.appspot.com/x/log.txt?x=164d6578680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=988789167afa40d5
dashboard link: https://syzkaller.appspot.com/bug?extid=dec4d528fb7a7c5d8ce3
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12e9ba2fa80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=111affcba80000

Reported-by: syzbot+dec4d528fb7a7c5d8ce3@...kaller.appspotmail.com
Fixes: 94d9ba9f9888 ("Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync")

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