netdev - Re: [PATCH net] ppp: fix pppoe_dev deletion condition in pppoe

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]

Date:	Fri, 20 Nov 2015 19:58:18 +0100
From:	Christoph Schulz <develop@...stov.de>
To:	David Miller <davem@...emloft.net>
Cc:	g.nault@...halink.fr, netdev@...r.kernel.org, paulus@...ba.org,
	nuclearcat@...learcat.com, Matt.Bennett@...iedtelesis.co.nz
Subject: Re: [PATCH net] ppp: fix pppoe_dev deletion condition in
 pppoe_release()

Hello!

David Miller schrieb am Fri, 23 Oct 2015 03:30:48 -0700 (PDT):

> From: Guillaume Nault <g.nault@...halink.fr>
> Date: Thu, 22 Oct 2015 16:57:10 +0200
>
>> We can't rely on PPPOX_ZOMBIE to decide whether to clear po->pppoe_dev.
>> PPPOX_ZOMBIE can be set by pppoe_disc_rcv() even when po->pppoe_dev is
>> NULL. So we have no guarantee that (sk->sk_state & PPPOX_ZOMBIE) implies
>> (po->pppoe_dev != NULL).
>> Since we're releasing a PPPoE socket, we want to release the pppoe_dev
>> if it exists and reset sk_state to PPPOX_DEAD, no matter the previous
>> value of sk_state. So we can just check for po->pppoe_dev and avoid any
>> assumption on sk->sk_state.
>>
>> Fixes: 2b018d57ff18 ("pppoe: drop PPPOX_ZOMBIEs in pppoe_release")
>> Signed-off-by: Guillaume Nault <g.nault@...halink.fr>
>
> Applied and queued up for -stable, thanks.

Somehow this commit (1acea4f6ce1b1c0941438aca75dd2e5c6b09db60) did not  
make it into Linux 4.2.6, 4.1.13, or 3.18.24. But I don't find it in  
your stable bundle on Patchwork either. Has this patch been  
inadvertently "lost in translation"?


Best regards,
-- 
Christoph Schulz

--
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