netdev - [PATCH 4.9 48/71] ipv6: export ip6 fragments sysctl to unprivileged users

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Date:   Tue, 16 Oct 2018 19:09:45 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
        Nikolay Borisov <kernel@...p.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.9 48/71] ipv6: export ip6 fragments sysctl to unprivileged users

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Dumazet <edumazet@...gle.com>

IPv4 was changed in commit 52a773d645e9 ("net: Export ip fragment
sysctl to unprivileged users")

The only sysctl that is not per-netns is not used :
ip6frag_secret_interval

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: Nikolay Borisov <kernel@...p.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
(cherry picked from commit 18dcbe12fe9fca0ab825f7eff993060525ac2503)
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/ipv6/reassembly.c |    4 ----
 1 file changed, 4 deletions(-)

--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -643,10 +643,6 @@ static int __net_init ip6_frags_ns_sysct
 		table[1].data = &net->ipv6.frags.low_thresh;
 		table[1].extra2 = &net->ipv6.frags.high_thresh;
 		table[2].data = &net->ipv6.frags.timeout;
-
-		/* Don't export sysctls to unprivileged users */
-		if (net->user_ns != &init_user_ns)
-			table[0].procname = NULL;
 	}
 
 	hdr = register_net_sysctl(net, "net/ipv6", table);