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CVE-2023-52858 Siemens CVE debrief

A vulnerability in the Linux kernel's Mediatek clock driver for MT7629 platforms was resolved by adding a null-check for `mtk_alloc_clk_data`. The fix prevents potential null pointer dereference issues when clock data allocation fails. Siemens has assessed this CVE as misinformed for their affected industrial networking products, indicating the vulnerability does not apply to their specific implementations.

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 custom Linux builds on Mediatek MT7629 platforms should verify kernel patch status. Users of Siemens RUGGEDCOM and SCALANCE industrial networking products can reference Siemens ProductCERT guidance indicating this CVE is misinformed for their environments.

Technical summary

The vulnerability exists in the Linux kernel's Mediatek clock driver for MT7629 platforms (clk-mt7629). The fix adds a check for the return value of `mtk_alloc_clk_data`, which allocates clock data structures. Without this check, a failed allocation could lead to null pointer dereference when the returned pointer is subsequently dereferenced. The resolution was implemented in the upstream Linux kernel. Siemens products incorporating this kernel component have been assessed as not affected ('Misinformed' classification in the threat data), suggesting their specific configurations or kernel versions do not expose this vulnerability.

Defensive priority

low

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-613116 for product-specific impact assessment
  • Verify kernel version and Mediatek clock driver implementation in affected systems if running custom Linux builds
  • Apply standard kernel security update practices for systems using Mediatek MT7629 platform
  • Monitor CISA ICS advisories for updates to ICSA-25-226-15

Evidence notes

The vulnerability description indicates a kernel-level fix in the Mediatek clock driver (clk-mt7629) to add validation for `mtk_alloc_clk_data` return values. The source advisory (ICSA-25-226-15) explicitly marks this CVE with threat category 'impact' and details 'Misinformed' for Siemens products including RUGGEDCOM RST2428P and SCALANCE X families. The advisory was initially published 2025-08-12 and most recently updated 2026-02-25 based on Siemens ProductCERT SSA-613116.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-52858 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-52858

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

  • CVE-2023-52858 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-52858

    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.