Skip to content

[fips-legacy-8] netfilter: nf_tables: Reject tables of unsupported family #502

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Aug 18, 2025
Merged

[fips-legacy-8] netfilter: nf_tables: Reject tables of unsupported family #502

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
27 changes: 27 additions & 0 deletions net/netfilter/nf_tables_api.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1076,6 +1076,30 @@ static int nft_objname_hash_cmp(struct rhashtable_compare_arg *arg,
return strcmp(obj->key.name, k->name);
}

static bool nft_supported_family(u8 family)
{
return false
#ifdef CONFIG_NF_TABLES_INET
|| family == NFPROTO_INET
#endif
#ifdef CONFIG_NF_TABLES_IPV4
|| family == NFPROTO_IPV4
#endif
#ifdef CONFIG_NF_TABLES_ARP
|| family == NFPROTO_ARP
#endif
#ifdef CONFIG_NF_TABLES_NETDEV
|| family == NFPROTO_NETDEV
#endif
#if IS_ENABLED(CONFIG_NF_TABLES_BRIDGE)
|| family == NFPROTO_BRIDGE
#endif
#ifdef CONFIG_NF_TABLES_IPV6
|| family == NFPROTO_IPV6
#endif
;
}

static int nf_tables_newtable(struct net *net, struct sock *nlsk,
struct sk_buff *skb, const struct nlmsghdr *nlh,
const struct nlattr * const nla[],
Expand All @@ -1090,6 +1114,9 @@ static int nf_tables_newtable(struct net *net, struct sock *nlsk,
struct nft_ctx ctx;
int err;

if (!nft_supported_family(family))
return -EOPNOTSUPP;

lockdep_assert_held(&net->nft_commit_mutex);
attr = nla[NFTA_TABLE_NAME];
table = nft_table_lookup(net, attr, family, genmask);
Expand Down