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7.8
HIGH CVSS 3.1
CVE-2026-74565
netfilter: nf_tables: make nft_object rhltable per table
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: make nft_object rhltable per table The nft_object rhltable is global, this allows for accessing objects that are being dismangled from lookup path by other existing netns. Given the nft_obj_destroy() releases the object inmediately, this might lead to use-after-free of these objects that are being released. Make the existing rhltable per table to address this issue to deal with with the nft_rcv_nl_event() path too. Update nft_obj_lookup() to take the table as non-const, otherwise, compiler complains when passing the objname_ht to rhltable_lookup().

Details
INFO

Published Date :

Aug. 15, 2026, 1:18 p.m.

Last Modified :

Sept. 14, 2026, 1:18 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-74565 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.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Resolve use-after-free by making the nft_object rhltable per table in the Linux kernel.
  • Apply the netfilter: nf_tables patch.
  • Update nft_obj_lookup to accept non-const table.
  • Ensure rhltable lookup uses objname_ht.
  • Test the fix in all netns.
References
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-2026-74565.

URL Resource
https://git.kernel.org/stable/c/1948e4f85b855618b5b9a27265f98d816f4cb7cb
https://git.kernel.org/stable/c/4b549d32d34ee765527e63726bb1af984876e776
https://git.kernel.org/stable/c/523c881661dde67efb44fce38c8eed50a72a57c1
https://git.kernel.org/stable/c/63ba12b664a2cd3220ed43e22c717715f4cc2ae8
https://git.kernel.org/stable/c/7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af
https://git.kernel.org/stable/c/f4f699790590bd0896c48a71e9232a65198f92f0
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-74565 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-2026-74565 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-2026-74565 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-74565 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.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 14, 2026

    Action Type Old Value New Value
    Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/74xxx/CVE-2026-74565.json">CVE-2026-74565</a>
    Added Reference https://git.kernel.org/stable/c/1948e4f85b855618b5b9a27265f98d816f4cb7cb
    Added Reference https://git.kernel.org/stable/c/4b549d32d34ee765527e63726bb1af984876e776
    Added Reference https://git.kernel.org/stable/c/523c881661dde67efb44fce38c8eed50a72a57c1
    Added Reference https://git.kernel.org/stable/c/63ba12b664a2cd3220ed43e22c717715f4cc2ae8
    Added Reference https://git.kernel.org/stable/c/7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af
    Added Reference https://git.kernel.org/stable/c/f4f699790590bd0896c48a71e9232a65198f92f0
    Removed Reference https://git.kernel.org/stable/c/1948e4f85b855618b5b9a27265f98d816f4cb7cb
    Removed Reference https://git.kernel.org/stable/c/63ba12b664a2cd3220ed43e22c717715f4cc2ae8
    Removed Reference https://git.kernel.org/stable/c/7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af
    Removed Reference https://git.kernel.org/stable/c/f4f699790590bd0896c48a71e9232a65198f92f0
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': '1948e4f85b855618b5b9a27265f98d816f4cb7cb', 'versionType': 'git'}, {'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': '63ba12b664a2cd3220ed43e22c717715f4cc2ae8', 'versionType': 'git'}, {'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': '7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af', 'versionType': 'git'}, {'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': 'f4f699790590bd0896c48a71e9232a65198f92f0', 'versionType': 'git'}], 'programFiles': ['include/net/netfilter/nf_tables.h', 'net/netfilter/nf_tables_api.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.1'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.1', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['include/net/netfilter/nf_tables.h', 'net/netfilter/nf_tables_api.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': '1948e4f85b855618b5b9a27265f98d816f4cb7cb', 'versionType': 'git'}, {'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': '63ba12b664a2cd3220ed43e22c717715f4cc2ae8', 'versionType': 'git'}, {'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': '7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af', 'versionType': 'git'}, {'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': 'f4f699790590bd0896c48a71e9232a65198f92f0', 'versionType': 'git'}], 'programFiles': ['include/net/netfilter/nf_tables.h', 'net/netfilter/nf_tables_api.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.1'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.1', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['include/net/netfilter/nf_tables.h', 'net/netfilter/nf_tables_api.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 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': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': '1948e4f85b855618b5b9a27265f98d816f4cb7cb', 'versionType': 'git'}, {'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': '63ba12b664a2cd3220ed43e22c717715f4cc2ae8', 'versionType': 'git'}, {'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': '7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af', 'versionType': 'git'}, {'status': 'affected', 'version': '4d44175aa5bb5f68772b1eb0306554812294ca52', 'lessThan': 'f4f699790590bd0896c48a71e9232a65198f92f0', 'versionType': 'git'}], 'programFiles': ['include/net/netfilter/nf_tables.h', 'net/netfilter/nf_tables_api.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.1'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.1', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['include/net/netfilter/nf_tables.h', 'net/netfilter/nf_tables_api.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: make nft_object rhltable per table The nft_object rhltable is global, this allows for accessing objects that are being dismangled from lookup path by other existing netns. Given the nft_obj_destroy() releases the object inmediately, this might lead to use-after-free of these objects that are being released. Make the existing rhltable per table to address this issue to deal with with the nft_rcv_nl_event() path too. Update nft_obj_lookup() to take the table as non-const, otherwise, compiler complains when passing the objname_ht to rhltable_lookup().
    Added Reference https://git.kernel.org/stable/c/1948e4f85b855618b5b9a27265f98d816f4cb7cb
    Added Reference https://git.kernel.org/stable/c/63ba12b664a2cd3220ed43e22c717715f4cc2ae8
    Added Reference https://git.kernel.org/stable/c/7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af
    Added Reference https://git.kernel.org/stable/c/f4f699790590bd0896c48a71e9232a65198f92f0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact