From e0ebde0e131b529fd721b24f62872def5ec3718c Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Thu, 27 Nov 2014 10:16:15 +0100 Subject: [PATCH] rtnetlink: release net refcnt on error in do_setlink() rtnl_link_get_net() holds a reference on the 'struct net', we need to release it in case of error. CC: Eric W. Biederman Fixes: b51642f6d77b ("net: Enable a userns root rtnl calls that are safe for unprivilged users") Signed-off-by: Nicolas Dichtel Reviewed-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- net/core/rtnetlink.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index b9b7dfaf202b..76321ea442c3 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1498,6 +1498,7 @@ static int do_setlink(const struct sk_buff *skb, goto errout; } if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { + put_net(net); err = -EPERM; goto errout; } -- 2.20.1