CVE-2023-52924 netfilter: nf_tables: don't skip expired elements during walk

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: don't skip expired elements during walk There is an asymmetry between commit/abort and preparation phase if the following conditions are met: 1. set is a verdict map "1.2.3.4 : jump foo" 2. timeouts are enabl...