netfilter: nf_tables: reject immediate NF_QUEUE verdict

Summary

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.

Timeline

1. May 1, 2026, 2:15 PM UTCCVE published
2. Oct 15, 2026, 1:18 AM UTCRecord last updated

Affected versions

• Linux 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 Linux

  6.8

• KernelLinux

  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

References 8