linux-kernel - Re: [RFC v2 00/10] snet: Security for NETwork syscalls

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Date:	Sun, 7 Mar 2010 14:47:56 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	sam@...ack.fr
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org, hadi@...erus.ca, kaber@...sh.net,
	zbr@...emap.net, nhorman@...driver.com, root@...aldomain.pl,
	linux-security-module@...r.kernel.org, serue@...ibm.com
Subject: Re: [RFC v2 00/10] snet: Security for NETwork syscalls

Samir Bellabes wrote:
> Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp> writes:
> 
> > Regarding [RFC v2 02/10] Revert "lsm: Remove the socket_post_accept() hook"
> > @@ -1538,6 +1538,8 @@ SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr,
> >  	fd_install(newfd, newfile);
> >  	err = newfd;
> >  
> > +	security_socket_post_accept(sock, newsock);
> > +
> >  out_put:
> >  	fput_light(sock->file, fput_needed);
> >  out:
> >
> > Please move security_socket_post_accept() to before fd_install().
> > Otherwise, other threads which share fd tables can use
> > security-informations-not-yet-updated accept()ed sockets.
> 
> Tetsuo, what about this patch ?
> 
Looks OK to me. Thanks.
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