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...

kernel: netfilter: nf_tables: don't skip expired elements during walk

A flaw was found in the Linux kernel. Improper management of the lifecycle of some nftables objects could result in consumption of all system memory. An attacker who can create nftables rules could use this to effect a Denial of Service...