netdev - Re: [PATCH net] netrom: fix possible dead-lock in nr_rt

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: <20240515164054.GB179178@kernel.org>
Date: Wed, 15 May 2024 17:40:54 +0100
From: Simon Horman <horms@...nel.org>
To: Eric Dumazet <edumazet@...gle.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org, eric.dumazet@...il.com,
	syzbot <syzkaller@...glegroups.com>
Subject: Re: [PATCH net] netrom: fix possible dead-lock in nr_rt_ioctl()

On Wed, May 15, 2024 at 02:29:34PM +0000, Eric Dumazet wrote:
> syzbot loves netrom, and found a possible deadlock in nr_rt_ioctl [1]
> 
> Make sure we always acquire nr_node_list_lock before nr_node_lock(nr_node)

...

> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Reported-by: syzbot <syzkaller@...glegroups.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Reviewed-by: Simon Horman <horms@...nel.org>