CVE-2025-38201

netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX

Published Jul 4, 2025 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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")

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4498-1 linux security update
Debian DLA Debian DLA DLA-4499-1 linux-6.1 security update
Debian DSA Debian DSA DSA-6163-1 linux security update
EUVD EUVD EUVD-2025-20055 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")
Ubuntu USN Ubuntu USN USN-7833-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7834-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-7833-2 Linux kernel (Real-time) vulnerabilities
Ubuntu USN Ubuntu USN USN-7833-3 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-7833-4 Linux kernel (GCP) vulnerabilities
Ubuntu USN Ubuntu USN USN-7856-1 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-8278-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8289-1 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-8296-1 Linux kernel (FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8296-2 Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN Ubuntu USN USN-8278-2 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-8440-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-8493-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8493-2 Linux kernel (Oracle) vulnerabilities
Ubuntu USN Ubuntu USN USN-8499-1 Linux kernel (Xilinx) vulnerabilities
Ubuntu USN Ubuntu USN USN-8527-1 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-8528-1 Linux kernel (Xilinx ZynqMP) vulnerabilities
Ubuntu USN Ubuntu USN USN-8547-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8547-2 Linux kernel (Azure FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8289-2 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-8393-1 Linux kernel (Azure FIPS) vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Type Values Removed Values Added
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")
Title netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Linux
Published
Updated
Nov 10, 2026, 12:36 PM
Reserved
Apr 16, 2025, 4:51 AM
Status
Modified
Published
Jul 4, 2025, 2:15 PM
Modified
Nov 10, 2026, 1:17 PM
Severity
Moderate
Public date
Jul 4, 2025, 12:00 AM