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Linux Kernel Netfilter TPROXY Prerouting Restriction Vulnerability

Vulnerability

A vulnerability in the Linux kernel's netfilter component related to TPROXY handling has been addressed. TPROXY is intended to be used only from the prerouting hook, but the nft_tproxy implementation failed to enforce this restriction. This oversight could lead to a null dereference crash when TPROXY is used from other hooks, such as output.

Impact

Exploitation of this vulnerability could lead to a null pointer dereference, causing a crash.

Added: Jun 18, 2025, 8:36 PM
Updated: Jun 18, 2025, 8:36 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
5.3
remediation
0.0
relevance
0.2
threat
3.2
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.