CVE-2026-43024netfilter: nf_tables: reject immediate NF_QUEUE verdict
Updated under an hour ago ()
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It affects Linux and 4 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 55a60251fa50d4e68175e36666b536a602ce4f6c builds before 2f7f825a548be55420f0f5f716f6c27b9d312d3f; from 960cf4f812530f01f6acc6878ceaa5404c06af7b before f140593901724cfbd16597c3a4fcb24a58ae44b0; from 8e34430e33b8a80bc014f3efe29cac76bc30a4b4 before 68390437a998c3f2c57212b413abef5e6d657d88; 6653118b176a00915125521c6572ae8e507621db builds before 4b12a3cc3f075e750cc3c5e693fd25fb400af4a2; from f342de4e2f33e0e39165d8639387aa6c19dff660 before f710691be163ae6b39e4bcab9e5be32d329f035b; from f342de4e2f33e0e39165d8639387aa6c19dff660 before 42a47f4b1b7695026ab9bc1bb35d4622b0835c95; from f342de4e2f33e0e39165d8639387aa6c19dff660 before 17dc5d5a935c771338430cbc156a16a51cfd31e8; from f342de4e2f33e0e39165d8639387aa6c19dff660 before da107398cbd4bbdb6bffecb2ce86d5c9384f4cec; and 10 more ranges | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 4.19.307 before 4.20; from 5.4.269 before 5.5; from 5.10.210 before 5.10.253; from 5.15.149 before 5.15.203; from 6.1.76 before 6.1.168; from 6.6.15 before 6.6.134; from 6.7.3 before 6.8; from 6.8.1 before 6.12.81; and 15 more ranges | NVD |
References
- https://git.kernel.org/stable/c/2f7f825a548be55420f0f5f716f6c27b9d312d3fpatch
- https://git.kernel.org/stable/c/f140593901724cfbd16597c3a4fcb24a58ae44b0patch
- https://git.kernel.org/stable/c/68390437a998c3f2c57212b413abef5e6d657d88patch
- https://git.kernel.org/stable/c/4b12a3cc3f075e750cc3c5e693fd25fb400af4a2patch
- https://git.kernel.org/stable/c/f710691be163ae6b39e4bcab9e5be32d329f035bpatch
- https://git.kernel.org/stable/c/42a47f4b1b7695026ab9bc1bb35d4622b0835c95patch
- https://git.kernel.org/stable/c/17dc5d5a935c771338430cbc156a16a51cfd31e8patch
- https://git.kernel.org/stable/c/da107398cbd4bbdb6bffecb2ce86d5c9384f4cecpatch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.