linux-kernel - Re: [syzbot] [bcachefs?] KASAN: use-after-free Read in poly1305

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] [day] [month] [year] [list]

Message-ID: <684e98b4.a00a0220.279073.002b.GAE@google.com>
Date: Sun, 15 Jun 2025 02:56:04 -0700
From: syzbot <syzbot+bfaeaa8e26281970158d@...kaller.appspotmail.com>
To: bp@...en8.de, dave.hansen@...ux.intel.com, davem@...emloft.net, 
	herbert@...dor.apana.org.au, hpa@...or.com, kent.overstreet@...ux.dev, 
	linux-bcachefs@...r.kernel.org, linux-crypto@...r.kernel.org, 
	linux-kernel@...r.kernel.org, mingo@...hat.com, mmpgouride@...il.com, 
	syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org
Subject: Re: [syzbot] [bcachefs?] KASAN: use-after-free Read in poly1305_update

syzbot has bisected this issue to:

commit d97de0d017cde0d442c3d144b4f969f43064cc0f
Author: Kent Overstreet <kent.overstreet@...ux.dev>
Date:   Tue Aug 13 01:31:25 2024 +0000

    bcachefs: Make bkey_fsck_err() a wrapper around fsck_err()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1683290c580000
start commit:   02adc1490e6d Merge tag 'spi-fix-v6.16-rc1' of git://git.ke..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1583290c580000
console output: https://syzkaller.appspot.com/x/log.txt?x=1183290c580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=162faeb2d1eaefb4
dashboard link: https://syzkaller.appspot.com/bug?extid=bfaeaa8e26281970158d
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1555310c580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12810e82580000

Reported-by: syzbot+bfaeaa8e26281970158d@...kaller.appspotmail.com
Fixes: d97de0d017cd ("bcachefs: Make bkey_fsck_err() a wrapper around fsck_err()")

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