linux-kernel - Re: KASAN: use-after-free Read in tc_chain_fill

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

Message-ID: <000000000000a1f99705f25eb92f@google.com>
Date:   Mon, 16 Jan 2023 02:05:38 -0800
From:   syzbot <syzbot+5f229e48cccc804062c0@...kaller.appspotmail.com>
To:     davem@...emloft.net, gregkh@...uxfoundation.org, jiri@...lanox.com,
        lee.jones@...aro.org, linux-kernel@...r.kernel.org,
        stable-commits@...r.kernel.org, stable@...r.kernel.org,
        syzkaller-lts-bugs@...glegroups.com, vladbu@...lanox.com
Subject: Re: KASAN: use-after-free Read in tc_chain_fill_node

This bug is marked as fixed by commit:
net: core: netlink: add helper refcount dec and lock function
net: sched: add helper function to take reference to Qdisc
net: sched: extend Qdisc with rcu
net: sched: rename qdisc_destroy() to qdisc_put()
net: sched: use Qdisc rcu API instead of relying on rtnl lock

But I can't find it in the tested trees[1] for more than 90 days.
Is it a correct commit? Please update it by replying:

#syz fix: exact-commit-title

Until then the bug is still considered open and new crashes with
the same signature are ignored.

Kernel: Linux 4.19
Dashboard link: https://syzkaller.appspot.com/bug?extid=5f229e48cccc804062c0

---
[1] I expect the commit to be present in:

1. linux-4.19.y branch of
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git