CVE-2026-64078
netfilter: x_tables: add and use xtables_unregister_table_exit
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().
INFO
Published Date :
July 19, 2026, 4:17 p.m.
Last Modified :
July 19, 2026, 4:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64078
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel to the latest version.
- Apply the netfilter xtables patch.
- Reboot the system if necessary.
- Verify the unregistration functionality.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64078.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64078 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64078
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64078 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64078 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'fdacd57c79b79a03c7ca88f706ad9fb7b46831c1', 'lessThan': '86ee5bc9c0f0e652e19f395675a432de11b75514', 'versionType': 'git'}, {'status': 'affected', 'version': 'fdacd57c79b79a03c7ca88f706ad9fb7b46831c1', 'lessThan': '8026e5163cca1d1db436c7bfb89ddea8b5e8c2cf', 'versionType': 'git'}, {'status': 'affected', 'version': 'fdacd57c79b79a03c7ca88f706ad9fb7b46831c1', 'lessThan': 'b4597d5fd7d2f8cebfffd40dffb5e003cc78964c', 'versionType': 'git'}], 'programFiles': ['include/linux/netfilter/x_tables.h', 'net/ipv4/netfilter/arp_tables.c', 'net/ipv4/netfilter/ip_tables.c', 'net/ipv4/netfilter/iptable_nat.c', 'net/ipv6/netfilter/ip6_tables.c', 'net/ipv6/netfilter/ip6table_nat.c', 'net/netfilter/x_tables.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.15'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.15', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.34', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.11', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['include/linux/netfilter/x_tables.h', 'net/ipv4/netfilter/arp_tables.c', 'net/ipv4/netfilter/ip_tables.c', 'net/ipv4/netfilter/iptable_nat.c', 'net/ipv6/netfilter/ip6_tables.c', 'net/ipv6/netfilter/ip6table_nat.c', 'net/netfilter/x_tables.c'], 'defaultStatus': 'affected'}] 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(). Added Reference https://git.kernel.org/stable/c/8026e5163cca1d1db436c7bfb89ddea8b5e8c2cf Added Reference https://git.kernel.org/stable/c/86ee5bc9c0f0e652e19f395675a432de11b75514 Added Reference https://git.kernel.org/stable/c/b4597d5fd7d2f8cebfffd40dffb5e003cc78964c