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VulnerabilityPublished Updated

CVE-2026-43024: Linux kernel · netfilter: nf_tables: reject immediate NF_QUEUE verdict

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f140593901724cfbd16597c3a4fcb24a58ae44b0 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:32 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in f140593901724cfbd16597c3a4fcb24a58ae44b0, f710691be163ae6b39e4bcab9e5be32d329f035b, da107398cbd4bbdb6bffecb2ce86d5c9384f4cec +12

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=5.10.210 <5.10.253
  • >=5.15.149 <5.15.203
  • >=6.1.76 <6.1.168
  • >=6.6.15 <6.6.134
  • >=4.19.307 <4.20
  • >=5.4.269 <5.5
  • >=6.7.3 <6.8
Fixed in
  • f140593901724cfbd16597c3a4fcb24a58ae44b0
  • f710691be163ae6b39e4bcab9e5be32d329f035b
  • da107398cbd4bbdb6bffecb2ce86d5c9384f4cec
  • 68390437a998c3f2c57212b413abef5e6d657d88
  • 42a47f4b1b7695026ab9bc1bb35d4622b0835c95
  • 17dc5d5a935c771338430cbc156a16a51cfd31e8
  • 6.8
  • 6.6.134
  • 6.1.168
  • 5.15.203
  • 5.10.253
  • 5.5
  • 4b12a3cc3f075e750cc3c5e693fd25fb400af4a2
  • 4.20
  • 2f7f825a548be55420f0f5f716f6c27b9d312d3f
LinuxLinuxAffected
  • =6.8
Fixed in–

AI-suggested

This vulnerability has been fixed in Linux kernel versions 4.20, 5.5, 5.10.253, 5.15.203, 6.1.168, 6.6.134, 6.8, and later. Users should upgrade to these or later versions to remediate the issue. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's netfilter nf_tables subsystem allowed immediate NF_QUEUE verdicts, which are not used by userspace nftables tools and could be reached via the arp family that lacks queue support. This issue has been addressed by globally rejecting immediate NF_QUEUE verdicts.

References

Community reviews

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