CVE-2026-43024: Linux kernel · netfilter: nf_tables: reject immediate NF_QUEUE verdict
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f140593901724cfbd16597c3a4fcb24a58ae44b0 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 16:32 UTC
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
Disclosed: evidence found.
CVE published 1 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| 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
- git.kernel.org/stable/c/2f7f825a548be55420f0f5f716f6c27b9d312d3f (opens in a new tab)
- git.kernel.org/stable/c/f140593901724cfbd16597c3a4fcb24a58ae44b0 (opens in a new tab)
- git.kernel.org/stable/c/68390437a998c3f2c57212b413abef5e6d657d88 (opens in a new tab)
- git.kernel.org/stable/c/4b12a3cc3f075e750cc3c5e693fd25fb400af4a2 (opens in a new tab)
- git.kernel.org/stable/c/f710691be163ae6b39e4bcab9e5be32d329f035b (opens in a new tab)
- git.kernel.org/stable/c/42a47f4b1b7695026ab9bc1bb35d4622b0835c95 (opens in a new tab)
- git.kernel.org/stable/c/17dc5d5a935c771338430cbc156a16a51cfd31e8 (opens in a new tab)
- git.kernel.org/stable/c/da107398cbd4bbdb6bffecb2ce86d5c9384f4cec (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)