CVE-2026-46324
Received Received - Intake
Use-after-free in Linux Kernel Netfilter nf_tables

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: use list_del_rcu for netlink hooks nft_netdev_unregister_hooks and __nft_unregister_flowtable_net_hooks need to use list_del_rcu(), this list can be walked by concurrent dumpers. Add a new helper and use it consistently.
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-09
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
CVE-2026-46324
EUVD
EUVD-2026-35414
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Impact Analysis

This vulnerability in the Linux kernel's netfilter nf_tables component involves improper use of list_del_rcu for netlink hooks. If exploited, it could potentially lead to issues when concurrent dumpers walk the list, possibly causing instability or unexpected behavior in network filtering operations.

Executive Summary

This vulnerability in the Linux kernel relates to the netfilter subsystem, specifically the nf_tables component. The issue involves the improper use of list manipulation functions for netlink hooks. The functions nft_netdev_unregister_hooks and __nft_unregister_flowtable_net_hooks were not using list_del_rcu(), which is necessary because the list can be accessed concurrently by dumpers. The fix involved adding a new helper function and consistently using list_del_rcu() to safely remove elements from the list.

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