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...

CVE-2023-52924

CVE-2023-52924 describes a Linux kernel vulnerability in nf_tables/netfilter where expired elements were wrongly skipped during a set walk, causing use-count inconsistencies and potential WARNs during chain removal. The issue arises in asymmetry between preparation/commit phases when a set elemen...