{"id":"CVE-2026-43024","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: reject immediate NF_QUEUE verdict\n\nnft_queue is always used from userspace nftables to deliver the NF_QUEUE\nverdict","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: reject immediate NF_QUEUE verdict\n\nnft_queue is always used from userspace nftables to deliver the NF_QUEUE\nverdict. Immediately emitting an NF_QU…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.19.307, < 4.20","linux_kernel >= 5.4.269, < 5.5","linux_kernel >= 5.10.210, < 5.10.253","linux_kernel >= 5.15.149, < 5.15.203","linux_kernel >= 6.1.76, < 6.1.168","linux_kernel >= 6.6.15, < 6.6.134","linux_kernel >= 6.7.3, < 6.8","linux_kernel >= 6.8.1, < 6.12.81","linux_kernel >= 6.13, < 6.18.22","linux_kernel >= 6.19, < 6.19.12","linux_kernel = 6.8","linux_kernel = 7.0"],"patched":["linux_kernel 6.19.12"],"published":"2026-05-01","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:19:24.587","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-43024","references":[{"url":"https://git.kernel.org/stable/c/17dc5d5a935c771338430cbc156a16a51cfd31e8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2f7f825a548be55420f0f5f716f6c27b9d312d3f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/42a47f4b1b7695026ab9bc1bb35d4622b0835c95","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4b12a3cc3f075e750cc3c5e693fd25fb400af4a2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/68390437a998c3f2c57212b413abef5e6d657d88","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/da107398cbd4bbdb6bffecb2ce86d5c9384f4cec","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f140593901724cfbd16597c3a4fcb24a58ae44b0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f710691be163ae6b39e4bcab9e5be32d329f035b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00129,"epssPercentile":0.02496,"ingestedAt":"2026-09-08T15:33:26.989Z","slug":"CVE-2026-43024","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: reject immediate NF_QUEUE verdict\n\nnft_queue is always used from userspace nftables to deliver the NF_QUEUE\nverdict. Immediately emitting an NF_QUEUE verdict is never used by the\nuserspace nft tools, so reject immediate NF_QUEUE verdicts.\n\nThe arp family does not provide queue support, but such an immediate\nverdict is still reachable. Globally reject NF_QUEUE immediate verdicts\nto address this issue.\n\n## Affected\n\n- `linux_kernel >= 4.19.307, < 4.20`\n- `linux_kernel >= 5.4.269, < 5.5`\n- `linux_kernel >= 5.10.210, < 5.10.253`\n- `linux_kernel >= 5.15.149, < 5.15.203`\n- `linux_kernel >= 6.1.76, < 6.1.168`\n- `linux_kernel >= 6.6.15, < 6.6.134`\n- `linux_kernel >= 6.7.3, < 6.8`\n- `linux_kernel >= 6.8.1, < 6.12.81`\n- `linux_kernel >= 6.13, < 6.18.22`\n- `linux_kernel >= 6.19, < 6.19.12`\n- `linux_kernel = 6.8`\n- `linux_kernel = 7.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.12`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":221751,"id":"CVE-2026-43024","ts":1792035356878,"field":"cvss","old":null,"new":"5.5"},{"seq":221750,"id":"CVE-2026-43024","ts":1792035356878,"field":"severity","old":"none","new":"medium"}]}