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From: Cong Wang <xiyou.wangcong@gmail.com>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: syzbot <syzbot+a82be85e09cd5df398fe@syzkaller.appspotmail.com>,
	 Johannes Berg <johannes@sipsolutions.net>,
	David Miller <davem@davemloft.net>,
	 Jakub Kicinski <kuba@kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	 Netdev <netdev@vger.kernel.org>,
	syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
	 WireGuard mailing list <wireguard@lists.zx2c4.com>
Subject: Re: KASAN: use-after-free Read in netdev_name_node_lookup_rcu
Date: Mon, 29 Jun 2020 20:33:48 -0700
Message-ID: <CAM_iQpVxrUinOBjqaw4U5u9PZZSTDY=FgSAsBxMju8uu=F5jfQ@mail.gmail.com> (raw)
In-Reply-To: <CAHmME9qOR4h7hsQ4_QuztPN+6w4KcoaYNs75yJn=L3S2Mhq9rA@mail.gmail.com>

On Mon, Jun 29, 2020 at 6:17 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> Hey Cong,

Hi, Jason

> I'm wondering if the below error is related to what you've been
> looking at yesterday. AFAICT, there's a simple UaF on the attrbuf
> passed to the start method. I recall recently you were working on the
> locking in genetlink's family buffers and wound up mallocing some
> things, so it seems like this might be related. See below.

Yeah, very likely it is the same bug I have fixed. I will close
this together with others.


  reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-30  0:40 syzbot
2020-06-30  1:17 ` Jason A. Donenfeld
2020-06-30  3:33   ` Cong Wang [this message]
2020-06-30  3:38 ` Cong Wang

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