Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2026-43024: netfilter: nf_tables: reject immediate NF_QUEUE verdict

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.12% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 17dc5d5a935c771338430cbc156a16a51cfd31e8, 2f7f825a548be55420f0f5f716f6c27b9d312d3f, 4.20.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 17dc5d5a935c771338430cbc156a16a51cfd31e8, 2f7f825a548be55420f0f5f716f6c27b9d312d3f, 4.20 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject immediate NF_QUEUE verdict nft_queue is always used from userspace nftables to deliver the NF_QUEUE verdict. Immediately emitting an NF_QUEUE verdict is never used by the userspace nft tools, so reject immediate NF_QUEUE verdicts. The arp family does not provide queue support, but such an immediate verdict is still reachable. Globally reject NF_QUEUE immediate verdicts to address this issue.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 1, 2026
Updated
Nov 10, 2026
EPSS
0.1% · 2th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-43024

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.19.307 and later · before 4.20
  • linux linux kernel5.4.269 and later · before 5.5
  • linux linux kernel5.10.210 and later · before 5.10.253
  • linux linux kernel5.15.149 and later · before 5.15.203
  • linux linux kernel6.1.76 and later · before 6.1.168
  • linux linux kernel6.6.15 and later · before 6.6.134
  • linux linux kernel6.7.3 and later · before 6.8
  • linux linux kernel6.8.1 and later · before 6.12.81
  • linux linux kernel6.13 and later · before 6.18.22
  • linux linux kernel6.19 and later · before 6.19.12
  • linux linux kernel6.8
  • linux linux kernel7.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 8365e9d92b85fda975a5ece7a3a139cb964018c8, 4e66422f1b56149761dc76030e6345d1cca6f869, f05a497e7bc8851eeeb3a58da180ba469efebb05, 6.8affected
    • 55a60251fa50d4e68175e36666b536a602ce4f6c and later · before 2f7f825a548be55420f0f5f716f6c27b9d312d3faffected · git
    • 960cf4f812530f01f6acc6878ceaa5404c06af7b and later · before f140593901724cfbd16597c3a4fcb24a58ae44b0affected · git
    • 8e34430e33b8a80bc014f3efe29cac76bc30a4b4 and later · before 68390437a998c3f2c57212b413abef5e6d657d88affected · git
    • 6653118b176a00915125521c6572ae8e507621db and later · before 4b12a3cc3f075e750cc3c5e693fd25fb400af4a2affected · git
    • f342de4e2f33e0e39165d8639387aa6c19dff660 and later · before f710691be163ae6b39e4bcab9e5be32d329f035baffected · git
    • f342de4e2f33e0e39165d8639387aa6c19dff660 and later · before 42a47f4b1b7695026ab9bc1bb35d4622b0835c95affected · git
    • f342de4e2f33e0e39165d8639387aa6c19dff660 and later · before 17dc5d5a935c771338430cbc156a16a51cfd31e8affected · git
    • f342de4e2f33e0e39165d8639387aa6c19dff660 and later · before da107398cbd4bbdb6bffecb2ce86d5c9384f4cecaffected · git
    • 5.10.210 and later · before 5.10.253affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.170-16.1.170-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.19.12-16.19.12-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-43022May 1, 2026 · Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists
    22Monitor
  • ← EarlierCVE-2026-43023May 1, 2026 · Bluetooth: SCO: fix race conditions in sco_sock_connect()
    31Monitor
  • Later →CVE-2026-43025May 1, 2026 · netfilter: ctnetlink: ignore explicit helper on new expectations
    29Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux17dc5d5a935c771338430cbc156a16a51cfd31e8Vendor (CNA)
Linux Linux2f7f825a548be55420f0f5f716f6c27b9d312d3fVendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux42a47f4b1b7695026ab9bc1bb35d4622b0835c95Vendor (CNA)
Linux Linux4b12a3cc3f075e750cc3c5e693fd25fb400af4a2Vendor (CNA)
Linux Linux5.10.253Vendor (CNA)
Linux Linux5.15.203Vendor (CNA)
Linux Linux5.5Vendor (CNA)
Linux Linux6.1.168Vendor (CNA)
Linux Linux6.6.134Vendor (CNA)
Linux Linux6.8Vendor (CNA)
Linux Linux68390437a998c3f2c57212b413abef5e6d657d88Vendor (CNA)
Linux Linuxda107398cbd4bbdb6bffecb2ce86d5c9384f4cecVendor (CNA)
Linux Linuxf140593901724cfbd16597c3a4fcb24a58ae44b0Vendor (CNA)
Linux Linuxf710691be163ae6b39e4bcab9e5be32d329f035bVendor (CNA)
debian:linux6.1.170-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records