CVE-2026-43024
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.
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
Description
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/17dc5d5a935c771338430cbc156a16a51cfd31e8Patch
- https://git.kernel.org/stable/c/2f7f825a548be55420f0f5f716f6c27b9d312d3fPatch
- https://git.kernel.org/stable/c/42a47f4b1b7695026ab9bc1bb35d4622b0835c95Patch
- https://git.kernel.org/stable/c/4b12a3cc3f075e750cc3c5e693fd25fb400af4a2Patch
- https://git.kernel.org/stable/c/68390437a998c3f2c57212b413abef5e6d657d88Patch
- https://git.kernel.org/stable/c/da107398cbd4bbdb6bffecb2ce86d5c9384f4cecPatch
- https://git.kernel.org/stable/c/f140593901724cfbd16597c3a4fcb24a58ae44b0Patch
- https://git.kernel.org/stable/c/f710691be163ae6b39e4bcab9e5be32d329f035bPatch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.