vxlan: fix dereference of nexthop group in nexthop update path (03eaeda7) · Commits · 戴 / test

fix dereference of nexthop group in fdb nexthop group update validation path. Fixes: ("vxlan: ecmp support for mac fdb entries") Reported-by:

drivers/net/vxlan.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -881,13 +881,13 @@ static int vxlan_fdb_nh_update(struct vxlan_dev vxlan, struct vxlan_fdb fdb,
		goto err_inval;
		}

		if (!nh->is_group \|\| !nh->nh_grp->mpath) {
		nhg = rtnl_dereference(nh->nh_grp);
		if (!nh->is_group \|\| !nhg->mpath) {
		NL_SET_ERR_MSG(extack, "Nexthop is not a multipath group");
		goto err_inval;
		}

		/* check nexthop group family */
		nhg = rtnl_dereference(nh->nh_grp);
		switch (vxlan->default_dst.remote_ip.sa.sa_family) {
		case AF_INET:
		if (!nhg->has_v4) {