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Review reviewHigh

CVE-2025-38201

Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP

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
EPSS
0.19%
9.24% percentile
CISA KEV
Not listed
Published
2025.07.04
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.19%
Technical severityCVSS 7.8

Vulnerability overview

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")

Affected product and versions

Product
Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Affected versions
>= 3c4287f62044a90e73a561aa05fc46e62da173da < 1fe27f97944017a9d3c5af4d6d95282bff0f1147, >= 3c4287f62044a90e73a561aa05fc46e62da173da < 4abccfb61f422300be014b8e734c63344306f009, >= 3c4287f62044a90e73a561aa05fc46e62da173da < 80417057ac60dd80f4816eb426e4e4a5bf696534, >= 3c4287f62044a90e73a561aa05fc46e62da173da < df524a68d9021c1401965d610bb6e42ee5d9611e, >= 3c4287f62044a90e73a561aa05fc46e62da173da < 0ab3de047808f375a36cd345225572eb3366f3c6, >= 3c4287f62044a90e73a561aa05fc46e62da173da < d2768016f091f8a5264076b433fd7c3fabb6eb97, >= 3c4287f62044a90e73a561aa05fc46e62da173da < b85e3367a5716ed3662a4fe266525190d2af76df, >= 5.6, >= V3.1.6, >= V3.1.5, >= 5.6 < 6.12.35, >= 6.13 < 6.15.4
Fixed versions
6.12.35, 6.15.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available