linux-kernel - Re: [syzbot] KASAN: use-after-free Write in get

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: <000000000000b1e03005cb6230b5@google.com>
Date:   Mon, 06 Sep 2021 23:51:07 -0700
From:   syzbot <syzbot+8c3af233123df0578a5c@...kaller.appspotmail.com>
To:     ebiederm@...ssion.com, legion@...nel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KASAN: use-after-free Write in get_ucounts

syzbot suspects this issue was fixed by commit:

commit 345daff2e994ee844d6a609c37f085695fbb4c4d
Author: Alexey Gladkov <legion@...nel.org>
Date:   Tue Jul 27 15:24:18 2021 +0000

    ucounts: Fix race condition between alloc_ucounts and put_ucounts

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1378d0ed300000
start commit:   d5ad8ec3cfb5 Merge tag 'media/v5.14-2' of git://git.kernel..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=702bfdfbf389c324
dashboard link: https://syzkaller.appspot.com/bug?extid=8c3af233123df0578a5c
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16fedec6300000

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

#syz fix: ucounts: Fix race condition between alloc_ucounts and put_ucounts

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