Bug 2464461 (CVE-2026-43024) - CVE-2026-43024 kernel: netfilter: nf_tables: reject immediate NF_QUEUE verdict
Summary: CVE-2026-43024 kernel: netfilter: nf_tables: reject immediate NF_QUEUE verdict
Keywords:
Status: NEW
Alias: CVE-2026-43024
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-01 15:08 UTC by OSIDB Bzimport
Modified: 2026-05-01 17:06 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-05-01 15:08:06 UTC 
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.
Comment 1 Keith Grant 2026-05-01 17:03:28 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050159-CVE-2026-43024-9383@gregkh/T
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