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authorPablo Neira Ayuso <pablo@netfilter.org>2024-01-04 01:34:58 +0300
committerPablo Neira Ayuso <pablo@netfilter.org>2024-01-17 14:02:45 +0300
commit0617c3de9b4026b87be12b0cb5c35f42c7c66fcb (patch)
tree558bd425b953bb6559fa9ca879a18792bc3b6d9e /net
parentea937f77208323d35ffe2f8d8fc81b00118bfcda (diff)
downloadlinux-0617c3de9b4026b87be12b0cb5c35f42c7c66fcb.tar.xz
netfilter: nf_tables: reject invalid set policy
Report -EINVAL in case userspace provides a unsupported set backend policy. Fixes: c50b960ccc59 ("netfilter: nf_tables: implement proper set selection") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/netfilter/nf_tables_api.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 8438a8922e4a..a90a364f5be5 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -5048,8 +5048,16 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info,
}
desc.policy = NFT_SET_POL_PERFORMANCE;
- if (nla[NFTA_SET_POLICY] != NULL)
+ if (nla[NFTA_SET_POLICY] != NULL) {
desc.policy = ntohl(nla_get_be32(nla[NFTA_SET_POLICY]));
+ switch (desc.policy) {
+ case NFT_SET_POL_PERFORMANCE:
+ case NFT_SET_POL_MEMORY:
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+ }
if (nla[NFTA_SET_DESC] != NULL) {
err = nf_tables_set_desc_parse(&desc, nla[NFTA_SET_DESC]);