From: Pablo Neira Ayuso pablo@netfilter.org
[ Upstream commit 534799097a777e82910f77a4f9d289c815a9a64e ]
nft_table_lookup() allows us to obtain the table object by the name and the family. The netlink portID validation needs to be skipped for the dump path, since the ownership only applies to commands to update the given table. Skip validation if the specified netlink PortID is zero when calling nft_table_lookup().
Fixes: 6001a930ce03 ("netfilter: nftables: introduce table ownership") Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/netfilter/nf_tables_api.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index ca9ec8721e6c..1d62b1a83299 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -571,7 +571,7 @@ static struct nft_table *nft_table_lookup(const struct net *net, table->family == family && nft_active_genmask(table, genmask)) { if (nft_table_has_owner(table) && - table->nlpid != nlpid) + nlpid && table->nlpid != nlpid) return ERR_PTR(-EPERM);
return table;