CVE-2024-27020

In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()
nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there
is not any protection when iterate over nf_tables_expressions list in
__nft_expr_type_get(). Therefore, there is potential data-race of
nf_tables_expressions list entry. Use list_for_each_entry_rcu() to iterate
over nf_tables_expressions list in __nft_expr_type_get(), and use
rcu_read_lock() in the caller nft_expr_type_get() to protect the entire
type query process.