netfilter: nf_tables: disallow timeout for anonymous sets

Never used from userspace, disallow these parameters.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 16995b8..0d293ea 100644 (file)
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -4909,6 +4909,9 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info,
                if (!(flags & NFT_SET_TIMEOUT))
                        return -EINVAL;
 
+               if (flags & NFT_SET_ANONYMOUS)
+                       return -EOPNOTSUPP;
+
                err = nf_msecs_to_jiffies64(nla[NFTA_SET_TIMEOUT], &desc.timeout);
                if (err)
                        return err;
@@ -4917,6 +4920,10 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info,
        if (nla[NFTA_SET_GC_INTERVAL] != NULL) {
                if (!(flags & NFT_SET_TIMEOUT))
                        return -EINVAL;
+
+               if (flags & NFT_SET_ANONYMOUS)
+                       return -EOPNOTSUPP;
+
                desc.gc_int = ntohl(nla_get_be32(nla[NFTA_SET_GC_INTERVAL]));
        }