CVE-2025-38201
CVE-2025-38201 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (8th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-20055
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX Otherwise, it is possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when resizing hashtable because __GFP_NOWARN is unset. Similar to: b541ba7d1f5a ("netfilter: conntrack: clamp maximum hashtable size to INT_MAX")
Frequently asked questions
- What is CVE-2025-38201?
- In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX Otherwise, it is possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when resizing hashtable because __GFP_NOWARN is unset. Similar to: b541ba7d1f5a ("netfilter: conntrack: clamp maximum hashtable size to INT_MAX")
- How severe is CVE-2025-38201?
- CVE-2025-38201 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-38201 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-38201?
- CVE-2025-38201 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-38201?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-38201 have an EU (EUVD) identifier?
- Yes. CVE-2025-38201 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20055.
- When was CVE-2025-38201 published?
- CVE-2025-38201 was published on 2025-07-04 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/0ab3de047808f375a36cd345225572eb3366f3c6
- https://git.kernel.org/stable/c/1fe27f97944017a9d3c5af4d6d95282bff0f1147
- https://git.kernel.org/stable/c/4abccfb61f422300be014b8e734c63344306f009
- https://git.kernel.org/stable/c/80417057ac60dd80f4816eb426e4e4a5bf696534
- https://git.kernel.org/stable/c/b85e3367a5716ed3662a4fe266525190d2af76df
- https://git.kernel.org/stable/c/d2768016f091f8a5264076b433fd7c3fabb6eb97
- https://git.kernel.org/stable/c/df524a68d9021c1401965d610bb6e42ee5d9611e
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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