CVE-2026-43024 PUBLISHED

netfilter: nf_tables: reject immediate NF_QUEUE verdict

Assigner: Linux
Reserved: 01.05.2026 Published: 01.05.2026 Updated: 01.05.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 55a60251fa50d4e68175e36666b536a602ce4f6c to 2f7f825a548be55420f0f5f716f6c27b9d312d3f (excl.)
  • affected from 960cf4f812530f01f6acc6878ceaa5404c06af7b to f140593901724cfbd16597c3a4fcb24a58ae44b0 (excl.)
  • affected from 8e34430e33b8a80bc014f3efe29cac76bc30a4b4 to 68390437a998c3f2c57212b413abef5e6d657d88 (excl.)
  • affected from 6653118b176a00915125521c6572ae8e507621db to 4b12a3cc3f075e750cc3c5e693fd25fb400af4a2 (excl.)
  • affected from f342de4e2f33e0e39165d8639387aa6c19dff660 to f710691be163ae6b39e4bcab9e5be32d329f035b (excl.)
  • affected from f342de4e2f33e0e39165d8639387aa6c19dff660 to 42a47f4b1b7695026ab9bc1bb35d4622b0835c95 (excl.)
  • affected from f342de4e2f33e0e39165d8639387aa6c19dff660 to 17dc5d5a935c771338430cbc156a16a51cfd31e8 (excl.)
  • affected from f342de4e2f33e0e39165d8639387aa6c19dff660 to da107398cbd4bbdb6bffecb2ce86d5c9384f4cec (excl.)
  • Version 8365e9d92b85fda975a5ece7a3a139cb964018c8 is affected
  • Version 4e66422f1b56149761dc76030e6345d1cca6f869 is affected
  • Version f05a497e7bc8851eeeb3a58da180ba469efebb05 is affected
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.8 is affected
  • unaffected from 0 to 6.8 (excl.)
  • unaffected from 5.10.253 to 5.10.* (incl.)
  • unaffected from 5.15.203 to 5.15.* (incl.)
  • unaffected from 6.1.168 to 6.1.* (incl.)
  • unaffected from 6.6.134 to 6.6.* (incl.)
  • unaffected from 6.12.81 to 6.12.* (incl.)
  • unaffected from 6.18.22 to 6.18.* (incl.)
  • unaffected from 6.19.12 to 6.19.* (incl.)
  • unaffected from 7.0 to * (incl.)

References