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().

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00166.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 affected < 86ee5bc9c0f0e652e19f395675a432de11b75514
fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 affected < 8026e5163cca1d1db436c7bfb89ddea8b5e8c2cf
fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 affected < b4597d5fd7d2f8cebfffd40dffb5e003cc78964c
Linux Linux affected
Version Status Constraints
5.15 affected —
0 unaffected < 5.15
6.18.34 unaffected ≤ 6.18.*
7.0.11 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

No data.

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/8026e5163cca1d1db436c7bfb89ddea8b5e8c2cf cve-icon
https://git.kernel.org/stable/c/86ee5bc9c0f0e652e19f395675a432de11b75514 cve-icon
https://git.kernel.org/stable/c/b4597d5fd7d2f8cebfffd40dffb5e003cc78964c cve-icon
History

Mon, 20 Jul 2026 14:45:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Sun, 19 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
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().
Title netfilter: x_tables: add and use xtables_unregister_table_exit
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-20T13:43:05.475Z

Reserved: 2026-07-19T07:54:57.031Z

Link: CVE-2026-64078

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.