diff --git a/net/core/sock.c b/net/core/sock.c index be20a1af20e5..6b287eb5427b 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1315,6 +1315,12 @@ int sock_setsockopt(struct socket *sock, int level, int optname, __sock_set_mark(sk, val); break; case SO_RCVMARK: + if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) && + !ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) { + ret = -EPERM; + break; + } + sock_valbool_flag(sk, SOCK_RCVMARK, valbool); break;