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netfilter: nf_tables: discard table flag update with pending basechain deletion 

Hook unregistration is deferred to the commit phase, same occurs with
hook updates triggered by the table dormant flag. When both commands are
combined, this results in deleting a basechain while leaving its hook
still registered in the core.

Fixes: 179d9ba555 ("netfilter: nf_tables: fix table flag updates")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2024-04-03 19:35:30 +02:00
parent 24225011d8
commit 1bc83a019b
1 changed files with 5 additions and 4 deletions
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9
net/netfilter/nf_tables_api.c
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@ -1209,10 +1209,11 @@ static bool nft_table_pending_update(const struct nft_ctx *ctx)
return true;
list_for_each_entry(trans, &nft_net->commit_list, list) {
if ((trans->msg_type == NFT_MSG_NEWCHAIN ||
trans->msg_type == NFT_MSG_DELCHAIN) &&
trans->ctx.table == ctx->table &&
nft_trans_chain_update(trans))
if (trans->ctx.table == ctx->table &&
((trans->msg_type == NFT_MSG_NEWCHAIN &&
nft_trans_chain_update(trans)) ||
(trans->msg_type == NFT_MSG_DELCHAIN &&
nft_is_base_chain(trans->ctx.chain))))
return true;
}