netdev - Re: [PATCH net] dccp/tcp: fix ireq->opt races

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: <1508270001.31614.115.camel@edumazet-glaptop3.roam.corp.google.com>
Date:   Tue, 17 Oct 2017 12:53:21 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>, edumazet@...gle.com
Subject: Re: [PATCH net] dccp/tcp: fix ireq->opt races

On Tue, 2017-10-17 at 12:50 -0700, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> syzkaller found another bug in DCCP/TCP stacks [1]
> 
> For the reasons explained in commit ce1050089c96 ("tcp/dccp: fix
> ireq->pktopts race"), we need to make sure we do not access
> ireq->opt unless we own the request sock.


Arg, I will send a v2 without the silly lines that confuse patchwork.