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CVE-2026-46324

netfilter: nf_tables: use list_del_rcu for netlink hooks

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.20, 5.5, 5.11, 5.16, 5.18, and 5 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 · fixed in 2405730fde96f7fa483a5862e323b681e0e09f54; From f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 · fixed in fe45e203527af8a2c0dc4c8a7b56c09c74b796c8; From f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 · fixed in 0bd93ce4f3c35e845532184331d7917d7e562c80; From f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 · fixed in 0f33e8ad6ac563ae2233dd7f75884e0ee010521d; From f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 · fixed in f3224ee463f8f6f6ced7dcdf6081add4f8128527; From 4.19.316 · fixed in 4.20; From 5.4.262 · fixed in 5.5; From 5.10.198 · fixed in 5.11; From 5.15.45 · fixed in 5.16; From 5.17.13 · fixed in 5.18; From 5.18.2 · fixed in 5.19

  • Linux Linux

    5.19

  • KernelLinux

    From 5.19.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.114; From 6.13.0 · fixed in 6.18.33; From 6.19.0 · fixed in 7.0.10

References 5

git.kernel.org