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| author |   Pablo Neira Ayuso <pablo@netfilter.org> | 2020-07-04 02:51:28 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2020-07-04 02:51:28 +0200 |
| commit | c1f79a2eefdcc0aef5d7a911c27a3f75f1936ecd (patch) | |
| tree | b734a2cd2ed9ee3f00f7a7921ff49425b42e2a71 /net/netfilter | |
| parent | netfilter: nf_tables: add NFT_CHAIN_BINDING (diff) | |
| download | linux-dev-c1f79a2eefdcc0aef5d7a911c27a3f75f1936ecd.tar.xz linux-dev-c1f79a2eefdcc0aef5d7a911c27a3f75f1936ecd.zip | |
netfilter: nf_tables: reject unsupported chain flags
Bail out if userspace sends unsupported chain flags.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter')
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index b8a970dad213..f96785586f64 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -2285,6 +2285,9 @@ static int nf_tables_newchain(struct net *net, struct sock *nlsk, else if (chain) flags = chain->flags; + if (flags & ~NFT_CHAIN_FLAGS) + return -EOPNOTSUPP; + nft_ctx_init(&ctx, net, skb, nlh, family, table, chain, nla); if (chain != NULL) { |