Linux Kernel - Netfilter Vulnerability Affecting Multiple Distributions

CVE-2022-50213

What is CVE-2022-50213?

A vulnerability in the Linux kernel allows set lookups through netfilter to inadvertently reference sets from different tables. When a table is removed, a reference to the freed set can persist, leading to potential exploitation through use-after-free scenarios. This situation emphasizes the importance of only allowing set lookups to return sets from the original table used in the lookup, strengthening the kernel's stability and security.

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