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CVE-2026-64078

7.8 · HIGH

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 detac…

Published Jul 19, 2026EPSS 0.13%

Overview

CVE-2026-64078 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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().

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/8026e5163cca1d1db436c7bfb89ddea8b5e8c2cfRefgit.kernel.org/stable/c/86ee5bc9c0f0e652e19f395675a432de11b75514Refgit.kernel.org/stable/c/b4597d5fd7d2f8cebfffd40dffb5e003cc78964c

How CyberStrike helps

Frequently asked questions

What is CVE-2026-64078?

CVE-2026-64078 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-64078?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-64078?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-64078?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-64078 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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