CVE Database›Document archive›CVE-2026-64078

CVE-2026-64078

kernel: netfilter: x_tables: add and use xtables_unregister_table_exit

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Severity

Moderate

Red Hat Product Security

7.1

CVSS 3.1

Review impact separately from score.

Published · July 19, 2026

Updated · October 26, 2026

Description

A flaw was found in the Linux kernel's netfilter x_tables component. This vulnerability occurs when a userspace process attempts to re-instantiate a netfilter table after the module has been removed. Due to an incomplete unregistration process, the table cannot be properly re-established, potentially leading to a denial of service for network filtering functionalities. This issue is resolved by ensuring a complete unregistration of the table.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

CVSS / CWE

CVSS 3.1 · 7.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CWE-459 · Incomplete Cleanup