netfilter: nf_tables: disallow jump to implicit chain from set element
authorPablo Neira Ayuso <pablo@netfilter.org>
Mon, 8 Aug 2022 17:30:07 +0000 (19:30 +0200)
committerPablo Neira Ayuso <pablo@netfilter.org>
Tue, 9 Aug 2022 18:13:29 +0000 (20:13 +0200)
commitf323ef3a0d49e147365284bc1f02212e617b7f09
treee4e3c8b186ad39a11535e21ec4c374906fa03ef4
parent341b6941608762d8235f3fd1e45e4d7114ed8c2c
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>
include/net/netfilter/nf_tables.h
net/netfilter/nf_tables_api.c