---
id: CVE-2026-64078
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: x_tables: add and use xtables_unregister_table_exit

  Previous change added xtables_unregister_table_pre_exit to detach the
  table from the packetpath and to u…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: x_tables: add and use xtables_unregister_table_exit

  Previous change added xtables_unregister_table_pre_exit to detach the
  table from the packetpath and to u…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.15, < 6.18.34'
  - 'linux_kernel >= 6.19, < 7.0.11'
  - linux_kernel = 7.1
patched:
  - linux_kernel 7.0.11
published: '2026-07-19'
updated: '2026-09-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64078'
references:
  - url: 'https://git.kernel.org/stable/c/8026e5163cca1d1db436c7bfb89ddea8b5e8c2cf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/86ee5bc9c0f0e652e19f395675a432de11b75514'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b4597d5fd7d2f8cebfffd40dffb5e003cc78964c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00173
epssPercentile: 0.05904
ingestedAt: '2026-09-04T05:15:22.879Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

netfilter: x_tables: add and use xtables_unregister_table_exit

Previous change added xtables_unregister_table_pre_exit to detach the
table from the packetpath and to unlink it from the active table list.
In case of rmmod, userspace that is doing set/getsockopt for this table
will not be able to re-instantiate the table:
 1. The larval table has been removed already
 2. existing instantiated table is no longer on the xt pernet table list.

This adds the second stage helper:

unlink the table from the dying list, free the hook ops (if any) and do
the audit notification.  It replaces xt_unregister_table().

## Affected

- `linux_kernel >= 5.15, < 6.18.34`
- `linux_kernel >= 6.19, < 7.0.11`
- `linux_kernel = 7.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.11`