Otherwise EINVAL is bogusly reported to userspace when deleting a set
element. NFTA_SET_ELEM_KEY_END does not need to be set in case of:
- insertion: if not present, start key is used as end key.
- deletion: only start key needs to be specified, end key is ignored.
Hence, relax the sanity check.
Fixes: 88cccd908d51 ("netfilter: nf_tables: NFTA_SET_ELEM_KEY_END requires concat and interval flags")
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
v3: revamp patch description again.
net/netfilter/nf_tables_api.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 486994d2118e..1e48cd6c67ed 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -5902,8 +5902,9 @@ static bool nft_setelem_valid_key_end(const struct nft_set *set,
(NFT_SET_CONCAT | NFT_SET_INTERVAL)) {
if (flags & NFT_SET_ELEM_INTERVAL_END)
return false;
- if (!nla[NFTA_SET_ELEM_KEY_END] &&
- !(flags & NFT_SET_ELEM_CATCHALL))
+
+ if (nla[NFTA_SET_ELEM_KEY_END] &&
+ flags & NFT_SET_ELEM_CATCHALL)
return false;
} else {
if (nla[NFTA_SET_ELEM_KEY_END])
--
2.30.2
