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PatchSiren cyber security CVE debrief

CVE-2023-52607 Siemens CVE debrief

A null-pointer dereference vulnerability in the Linux kernel's PowerPC memory management subsystem, specifically within the `pgtable_cache_add` function, has been identified and resolved. This flaw could potentially lead to system instability or denial of service conditions on affected PowerPC-based systems. The vulnerability was addressed through a kernel patch that corrects the null-pointer dereference issue. Siemens has assessed this vulnerability as affecting certain industrial networking products running SINEC OS, including the RUGGEDCOM RST2428P and SCALANCE X-family switches. The CISA advisory ICSA-25-226-15, published August 12, 2025, and subsequently updated through February 25, 2026, provides coordinated disclosure for affected Siemens industrial control systems. Organizations operating the identified Siemens products should consult the vendor's security advisory for specific patch availability and deployment guidance.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2025-08-12
Original CVE updated
2026-02-25
Advisory published
2025-08-12
Advisory updated
2026-02-25

Who should care

Organizations operating Siemens industrial networking infrastructure, particularly those deploying RUGGEDCOM RST2428P devices or SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 and XCM-/XRM-/XCH-/XRH-300 family switches in operational technology environments. Security teams responsible for patch management in industrial control systems and Linux kernel maintainers for PowerPC-based embedded systems.

Technical summary

CVE-2023-52607 is a null-pointer dereference vulnerability in the Linux kernel's PowerPC architecture memory management code, specifically in the `pgtable_cache_add` function. The vulnerability has been resolved in the upstream kernel. Siemens has identified this issue as affecting certain industrial networking products running SINEC OS, including the RUGGEDCOM RST2428P and multiple SCALANCE X-family switch product lines. The CISA advisory ICSA-25-226-15, with final update dated February 25, 2026, coordinates disclosure for affected industrial control systems. No CVSS score is available in the disclosed information.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-613116 for detailed product-specific patch information and affected version matrices
  • Verify SINEC OS version on deployed RUGGEDCOM RST2428P and SCALANCE X-family devices against vendor guidance
  • Apply vendor-provided kernel updates or firmware patches addressing CVE-2023-52607 when available
  • Monitor CISA ICS advisories for additional guidance on industrial control system security practices
  • Implement network segmentation for industrial control systems per CISA recommended practices to limit exposure

Evidence notes

The vulnerability description indicates a resolved null-pointer dereference in powerpc/mm pgtable_cache_add. The source advisory ICSA-25-226-15 was initially published 2025-08-12 and underwent three subsequent revisions through 2026-02-25, with the final update reflecting republication based on Siemens SSA-613116. The threat assessment in the source material categorizes impact as 'Misinformed' for affected product IDs. No CVSS score or severity rating is present in the supplied corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-52607 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-52607

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2023-52607 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-52607

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-226-15.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-613116.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-613116.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-15

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.