Linux Kernel Netfilter nf_tables Field Length Mismatch Vulnerability

A vulnerability in the Linux kernel's netfilter component, specifically within nf_tables, has been addressed. This issue arises from a mismatch between the field length description and the set key length, allowing for incorrect arithmetic operations that could be exploited. The vulnerability involves set key lengths that do not align properly with the corresponding field lengths, creating potential inconsistencies that could be manipulated.

Impact

Exploitation of this vulnerability could lead to incorrect handling of key lengths in netfilter's nf_tables, potentially allowing for arbitrary manipulation of packet filtering rules.