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authorPablo Neira Ayuso <pablo@netfilter.org>2022-08-08 19:30:07 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2022-08-09 20:13:29 +0200
commitf323ef3a0d49e147365284bc1f02212e617b7f09 (patch)
treee4e3c8b186ad39a11535e21ec4c374906fa03ef4 /include/net/netfilter
parent341b6941608762d8235f3fd1e45e4d7114ed8c2c (diff)
downloadlwn-f323ef3a0d49e147365284bc1f02212e617b7f09.tar.gz
lwn-f323ef3a0d49e147365284bc1f02212e617b7f09.zip
netfilter: nf_tables: disallow jump to implicit chain from set element
Extend struct nft_data_desc to add a flag field that specifies nft_data_init() is being called for set element data. Use it to disallow jump to implicit chain from set element, only jump to chain via immediate expression is allowed. Fixes: d0e2c7de92c7 ("netfilter: nf_tables: add NFT_CHAIN_BINDING") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net/netfilter')
-rw-r--r--include/net/netfilter/nf_tables.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 1554f1e7215b..99aae36c04b9 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -221,10 +221,15 @@ struct nft_ctx {
bool report;
};
+enum nft_data_desc_flags {
+ NFT_DATA_DESC_SETELEM = (1 << 0),
+};
+
struct nft_data_desc {
enum nft_data_types type;
unsigned int size;
unsigned int len;
+ unsigned int flags;
};
int nft_data_init(const struct nft_ctx *ctx, struct nft_data *data,