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PatchSiren cyber security CVE debrief

CVE-2023-52875 Siemens CVE debrief

A vulnerability in the Linux kernel's Mediatek clock driver (clk-mt2701) was resolved by adding a null-check for mtk_alloc_clk_data. The issue was a missing validation that could lead to undefined behavior if memory allocation failed. Siemens has assessed this CVE as **Misinformed** for their affected industrial networking products (RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, and SCALANCE XCM-/XRM-/XCH-/XRH-300 family), indicating the vulnerability does not actually affect these products as initially reported. The CVE was published on 2025-08-12 and last modified on 2026-02-25. No CVSS score is available. This is not a Known Exploited Vulnerability (KEV).

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 running Siemens RUGGEDCOM and SCALANCE industrial networking equipment; Linux kernel maintainers for Mediatek SoC support; OT security teams monitoring CISA ICS advisories

Technical summary

The vulnerability exists in the Mediatek clock driver for MT2701 SoCs in the Linux kernel. The fix adds a null-check for the return value of mtk_alloc_clk_data(), which allocates memory for clock data structures. Without this check, a failed memory allocation could result in null pointer dereference. The vulnerability is classified as CWE-476 (NULL Pointer Dereference). Siemens has determined this CVE does not actually affect their listed products despite initial inclusion in affected product lists.

Defensive priority

low

Recommended defensive actions

  • Verify current firmware version on affected Siemens devices
  • Review Siemens ProductCERT advisory SSA-613116 for product-specific guidance
  • Apply vendor-recommended updates if applicable
  • Monitor CISA ICS advisories for future updates

Evidence notes

The source CSAF document (ICSA-25-226-15) explicitly marks this CVE with threat category 'impact' and details 'Misinformed' for all affected product IDs (CSAFPID-0001, CSAFPID-0003, CSAFPID-0004). The CVE description indicates a kernel-level fix was implemented. No CVSS vector is provided in the source.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-52875 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-52875

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

  • CVE-2023-52875 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-52875

    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.