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path: root/drivers/net/wireguard/netlink.c
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Diffstat (limited to 'drivers/net/wireguard/netlink.c')
-rw-r--r--drivers/net/wireguard/netlink.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/net/wireguard/netlink.c b/drivers/net/wireguard/netlink.c
index 802099c8828a..20a4f3c0a0a1 100644
--- a/drivers/net/wireguard/netlink.c
+++ b/drivers/net/wireguard/netlink.c
@@ -511,11 +511,15 @@ static int wg_set_device(struct sk_buff *skb, struct genl_info *info)
if (flags & ~__WGDEVICE_F_ALL)
goto out;
- ret = -EPERM;
- if ((info->attrs[WGDEVICE_A_LISTEN_PORT] ||
- info->attrs[WGDEVICE_A_FWMARK]) &&
- !ns_capable(wg->creating_net->user_ns, CAP_NET_ADMIN))
- goto out;
+ if (info->attrs[WGDEVICE_A_LISTEN_PORT] || info->attrs[WGDEVICE_A_FWMARK]) {
+ struct net *net;
+ rcu_read_lock();
+ net = rcu_dereference(wg->creating_net);
+ ret = !net || !ns_capable(net->user_ns, CAP_NET_ADMIN) ? -EPERM : 0;
+ rcu_read_unlock();
+ if (ret)
+ goto out;
+ }
++wg->device_update_gen;