What’s Vulnerable › Vulnerabilities
CVE-2024-40993: netfilter: ipset: Fix suspicious rcu_dereference_protected()
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-07-12 · updated 2026-10-15
Description
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().
Affected products
- Linux kernel: 6.1.95, 6.6.35, 6.9.6, 6.10-rc4
References
- https://git.kernel.org/stable/c/3799d02ae4208af08e81310770d8754863a246a1
- https://git.kernel.org/stable/c/3fc09e1ca854bc234e007a56e0f7431f5e2defb5
- https://git.kernel.org/stable/c/523bed6489e089dd8040e72453fb79da47b144c2
- https://git.kernel.org/stable/c/72d9611968867cc4c5509e7708b1507d692b797a
- https://git.kernel.org/stable/c/788d585e62f487bc4536d454937f737b70d39a33
- https://git.kernel.org/stable/c/8ecd06277a7664f4ef018abae3abd3451d64e7a6
- https://git.kernel.org/stable/c/94dd411c18d7fff9e411555d5c662d29416501e4
- https://git.kernel.org/stable/c/3799d02ae4208af08e81310770d8754863a246a1
- https://git.kernel.org/stable/c/3fc09e1ca854bc234e007a56e0f7431f5e2defb5
- https://git.kernel.org/stable/c/523bed6489e089dd8040e72453fb79da47b144c2
- https://git.kernel.org/stable/c/72d9611968867cc4c5509e7708b1507d692b797a
- https://git.kernel.org/stable/c/788d585e62f487bc4536d454937f737b70d39a33
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