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.
Affected products
linux: linux kernel
References10
- git.kernel.org/stable/c/17dc5d5a935c771338430cbc156a16a51cfd31e8 Patch
- git.kernel.org/stable/c/2f7f825a548be55420f0f5f716f6c27b9d312d3f Patch
- git.kernel.org/stable/c/42a47f4b1b7695026ab9bc1bb35d4622b0835c95 Patch
- git.kernel.org/stable/c/4b12a3cc3f075e750cc3c5e693fd25fb400af4a2 Patch
- git.kernel.org/stable/c/68390437a998c3f2c57212b413abef5e6d657d88 Patch
- git.kernel.org/stable/c/da107398cbd4bbdb6bffecb2ce86d5c9384f4cec Patch
- git.kernel.org/stable/c/f140593901724cfbd16597c3a4fcb24a58ae44b0 Patch
- git.kernel.org/stable/c/f710691be163ae6b39e4bcab9e5be32d329f035b Patch
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.com/productcert/html/ssa-082556.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 13 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.