From 34f65dbb6c7572b826d836d62b99de32ecf2af48 Mon Sep 17 00:00:00 2001 From: Richard Alpe Date: Thu, 3 Mar 2016 14:20:43 +0100 Subject: [PATCH] tipc: make sure required IPv6 addresses are scoped Make sure the user has provided a scope for multicast and link local addresses used locally by a UDP bearer. Signed-off-by: Richard Alpe Acked-by: Jon Maloy Reviewed-by: Erik Hugne Signed-off-by: David S. Miller --- net/tipc/udp_media.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c index 6fe8740a226f..fb2f7ec68eef 100644 --- a/net/tipc/udp_media.c +++ b/net/tipc/udp_media.c @@ -310,9 +310,14 @@ err: #if IS_ENABLED(CONFIG_IPV6) } else if ((sa_local.ss_family & sa_remote.ss_family) == AF_INET6) { + int atype; struct sockaddr_in6 *ip6; ip6 = (struct sockaddr_in6 *)&sa_local; + atype = ipv6_addr_type(&ip6->sin6_addr); + if (__ipv6_addr_needs_scope_id(atype) && !ip6->sin6_scope_id) + return -EINVAL; + local->proto = htons(ETH_P_IPV6); local->udp_port = ip6->sin6_port; memcpy(&local->ipv6, &ip6->sin6_addr, sizeof(struct in6_addr)); -- 2.39.5