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netfilter: nftables: avoid potential overflows on 32bit arches
User space could ask for very large hash tables, we need to make sure our size computations wont overflow. nf_tables_newset() needs to double check the u64 size will fit into size_t field. Fixes: 0ed6389 ("netfilter: nf_tables: rename set implementations") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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