netdev - Re: [net-next 1/1] tipc: Fix namespace violation in tipc_sk_fill_sock

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Date:   Wed, 04 Apr 2018 11:55:00 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     mohan.krishna.ghanta.krishnamurthy@...csson.com
Cc:     tipc-discussion@...ts.sourceforge.net, jon.maloy@...csson.com,
        maloy@...jonn.com, ying.xue@...driver.com, netdev@...r.kernel.org
Subject: Re: [net-next 1/1] tipc: Fix namespace violation in
 tipc_sk_fill_sock_diag

From: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@...csson.com>
Date: Wed, 4 Apr 2018 14:49:47 +0200

> To fetch UID info for socket diagnostics, we determine the
> namespace of user context using tipc socket instance. This
> may cause namespace violation, as the kernel will remap based
> on UID.
> 
> We fix this by fetching namespace info using the calling userspace
> netlink socket.
> 
> Fixes: c30b70deb5f4 (tipc: implement socket diagnostics for AF_TIPC)
> Reported-by: syzbot+326e587eff1074657718@...kaller.appspotmail.com
> Acked-by: Jon Maloy <jon.maloy@...csson.com>
> Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@...csson.com>

Applied, thank you.