diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2024-03-21 03:27:50 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-10 17:35:44 +0300 |
| commit | cddd0480a682426d44fdadb55354367a905cedb7 (patch) | |
| tree | e5868eafb39c9fe1bbfbeb40f863730e7e11a9bc /net/netfilter | |
| parent | 614bc8c71ed5ae9ffdc89886003d20afbf20e86c (diff) | |
| download | linux-cddd0480a682426d44fdadb55354367a905cedb7.tar.xz | |
netfilter: nf_tables: reject destroy command to remove basechain hooks
[ Upstream commit b32ca27fa238ff83427d23bef2a5b741e2a88a1e ]
Report EOPNOTSUPP if NFT_MSG_DESTROYCHAIN is used to delete hooks in an
existing netdev basechain, thus, only NFT_MSG_DELCHAIN is allowed.
Fixes: 7d937b107108f ("netfilter: nf_tables: support for deleting devices in an existing netdev chain")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/netfilter')
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index f10419ba6e0b..0653f1e5e892 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -2934,7 +2934,8 @@ static int nf_tables_delchain(struct sk_buff *skb, const struct nfnl_info *info, nft_ctx_init(&ctx, net, skb, info->nlh, family, table, chain, nla); if (nla[NFTA_CHAIN_HOOK]) { - if (chain->flags & NFT_CHAIN_HW_OFFLOAD) + if (NFNL_MSG_TYPE(info->nlh->nlmsg_type) == NFT_MSG_DESTROYCHAIN || + chain->flags & NFT_CHAIN_HW_OFFLOAD) return -EOPNOTSUPP; if (nft_is_base_chain(chain)) { |