From 5aa3bcddc8ddc4a8c09541d4b608bfa765631a6d Mon Sep 17 00:00:00 2001 From: Sabrina Dubroca Date: Thu, 6 Mar 2014 17:51:57 +0100 Subject: [PATCH] ipv6: don't set DST_NOCOUNT for remotely added routes commit c88507fbad8055297c1d1e21e599f46960cbee39 upstream. DST_NOCOUNT should only be used if an authorized user adds routes locally. In case of routes which are added on behalf of router advertisments this flag must not get used as it allows an unlimited number of routes getting added remotely. Signed-off-by: Sabrina Dubroca Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller [bwh: Backported to 3.2: adjust context] Acked-by: David S. Miller Signed-off-by: Ben Hutchings --- net/ipv6/route.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 9a4f4377ce92..39e11f923a73 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1250,7 +1250,7 @@ int ip6_route_add(struct fib6_config *cfg) goto out; } - rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, NULL, DST_NOCOUNT); + rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, NULL, (cfg->fc_flags & RTF_ADDRCONF) ? 0 : DST_NOCOUNT); if (rt == NULL) { err = -ENOMEM; -- 2.39.2