From a9bdd8365684810e3de804f8c51e52c26a5eccbb Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Mon, 24 Mar 2014 15:10:37 +0100 Subject: [PATCH] netfilter: nf_tables: set names cannot be larger than 15 bytes Currently, nf_tables trims off the set name if it exceeeds 15 bytes, so explicitly reject set names that are too large. Reported-by: Giuseppe Longo Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_api.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 33045a562297..43ae48721254 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -1946,7 +1946,8 @@ static const struct nft_set_ops *nft_select_set_ops(const struct nlattr * const static const struct nla_policy nft_set_policy[NFTA_SET_MAX + 1] = { [NFTA_SET_TABLE] = { .type = NLA_STRING }, - [NFTA_SET_NAME] = { .type = NLA_STRING }, + [NFTA_SET_NAME] = { .type = NLA_STRING, + .len = IFNAMSIZ - 1 }, [NFTA_SET_FLAGS] = { .type = NLA_U32 }, [NFTA_SET_KEY_TYPE] = { .type = NLA_U32 }, [NFTA_SET_KEY_LEN] = { .type = NLA_U32 },