CVE-2022-49920

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: netlink notifier might race to release objects

commit release path is invoked via call_rcu and it runs lockless to

release the objects after rcu grace period. The netlink notifier handler

might win race to remove objects that the transaction context is still

referencing from the commit release path.

Call rcu_barrier() to ensure pending rcu callbacks run to completion

if the list of transactions to be destroyed is not empty.