netdev - Re: [PATCH] net: tcp: deal with listen sockets properly in tcp

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]

Date:	Mon, 21 Dec 2015 11:20:53 -0500
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Lorenzo Colitti <lorenzo@...gle.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net, tom@...bertland.com
Subject: Re: [PATCH] net: tcp: deal with listen sockets properly in
 tcp_abort.

On Tue, 2015-12-22 at 00:03 +0900, Lorenzo Colitti wrote:
> When closing a listen socket, tcp_abort currently calls
> tcp_done without clearing the request queue. If the socket has a
> child socket that is established but not yet accepted, the child
> socket is then left without a parent, causing a leak.
> 
> Fix this by setting the socket state to TCP_CLOSE and calling
> inet_csk_listen_stop with the socket lock held, like tcp_close
> does.
> 
> Tested using net_test. With this patch, calling SOCK_DESTROY on a
> listen socket that has an established but not yet accepted child
> socket results in the parent and the child being closed, such
> that they no longer appear in sock_diag dumps.
> 
> Reported-by: Eric Dumazet <eric.dumazet@...il.com>
> Signed-off-by: Lorenzo Colitti <lorenzo@...gle.com>
> ---

Acked-by: Eric Dumazet <edumazet@...gle.com>

Thanks !


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html