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CVE-2024-40993

netfilter: ipset: Fix suspicious rcu_dereference_protected()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.1.96, 6.6.36, 6.9.7
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Fix suspicious rcu_dereference_protected() When destroying all sets, we are either in pernet exit phase or are executing a "destroy all sets command" from userspace. The latter was taken into account in ip_set_dereference() (nfnetlink mutex is held), but the former was not. The patch adds the required check to rcu_dereference_protected() in ip_set_dereference().

Timeline

  1. CVE published
  2. CISA SSVC assessment

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

  3. Record last updated

Affected versions

  • Linux Linux

    From c0761d1f1ce1d5b85b5e82bbb714df12de1aa8c3 · fixed in 3799d02ae4208af08e81310770d8754863a246a1; From 93b53c202b51a69e42ca57f5a183f7e008e19f83 · fixed in 72d9611968867cc4c5509e7708b1507d692b797a; From 0f1bb77c6d837c9513943bc7c08f04c5cc5c6568 · fixed in 523bed6489e089dd8040e72453fb79da47b144c2; From 390b353d1a1da3e9c6c0fd14fe650d69063c95d6 · fixed in 788d585e62f487bc4536d454937f737b70d39a33; From 2ba35b37f780c6410bb4bba9c3072596d8576702 · fixed in 94dd411c18d7fff9e411555d5c662d29416501e4; From 90ae20d47de602198eb69e6cd7a3db3420abfc08 · fixed in 3fc09e1ca854bc234e007a56e0f7431f5e2defb5; From 4e7aaa6b82d63e8ddcbfb56b4fd3d014ca586f10 · fixed in 8ecd06277a7664f4ef018abae3abd3451d64e7a6

  • Linux Linux

    From 6.1.95 · fixed in 6.1.96; From 6.6.35 · fixed in 6.6.36; From 6.9.6 · fixed in 6.9.7

  • KernelLinux

    From 6.1.95 · fixed in 6.1.96; From 6.6.35 · fixed in 6.6.36; From 6.9.6 · fixed in 6.9.7

References 7

git.kernel.org