High 7.8Published Jul 4, 2025

CVE-2025-38201netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX

Updated under an hour ago (Oct 26, 2026, 1:20 PM ET)

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It affects Linux and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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")

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	3c4287f62044a90e73a561aa05fc46e62da173da builds before 1fe27f97944017a9d3c5af4d6d95282bff0f1147; from 3c4287f62044a90e73a561aa05fc46e62da173da before 4abccfb61f422300be014b8e734c63344306f009; from 3c4287f62044a90e73a561aa05fc46e62da173da before 80417057ac60dd80f4816eb426e4e4a5bf696534; from 3c4287f62044a90e73a561aa05fc46e62da173da before df524a68d9021c1401965d610bb6e42ee5d9611e; 3c4287f62044a90e73a561aa05fc46e62da173da builds before 0ab3de047808f375a36cd345225572eb3366f3c6; from 3c4287f62044a90e73a561aa05fc46e62da173da before d2768016f091f8a5264076b433fd7c3fabb6eb97; from 3c4287f62044a90e73a561aa05fc46e62da173da before b85e3367a5716ed3662a4fe266525190d2af76df	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.6 before 6.12.35; from 6.13 before 6.15.4	NVD

References

References

https://git.kernel.org/stable/c/1fe27f97944017a9d3c5af4d6d95282bff0f1147	patch
https://git.kernel.org/stable/c/4abccfb61f422300be014b8e734c63344306f009	patch
https://git.kernel.org/stable/c/80417057ac60dd80f4816eb426e4e4a5bf696534	patch
https://git.kernel.org/stable/c/df524a68d9021c1401965d610bb6e42ee5d9611e	patch
https://git.kernel.org/stable/c/0ab3de047808f375a36cd345225572eb3366f3c6	patch
https://git.kernel.org/stable/c/d2768016f091f8a5264076b433fd7c3fabb6eb97	patch
https://git.kernel.org/stable/c/b85e3367a5716ed3662a4fe266525190d2af76df	patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
https://cert-portal.siemens.com/productcert/html/ssa-457936.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.