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CVE-2023-52615 Siemens CVE debrief

A vulnerability in the Linux kernel's hardware random number generator (hwrng) core subsystem could allow a page fault deadlock condition when the hwrng device is memory-mapped (mmap-ed). The issue was resolved in the Linux kernel. Siemens has identified this vulnerability as affecting certain industrial networking products including the RUGGEDCOM RST2428P and SCALANCE X family switches running SINEC OS. CISA published advisory ICSA-25-226-15 on August 12, 2025, with subsequent updates through February 25, 2026, to refine affected product listings and remove rejected CVEs. The vulnerability is not listed in CISA's Known Exploited Vulnerabilities (KEV) catalog.

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 using RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, or SCALANCE XCM-/XRM-/XCH-/XRH-300 family devices with SINEC OS. Security teams responsible for industrial control system (ICS) infrastructure should prioritize firmware updates and network segmentation controls.

Technical summary

CVE-2023-52615 addresses a page fault deadlock condition in the Linux kernel's hardware random number generator (hwrng) core subsystem that occurs when the hwrng device is memory-mapped via mmap(). The vulnerability could cause system instability or denial of service conditions. The fix was committed to the Linux kernel hwrng core. Siemens industrial networking products running SINEC OS, including the RUGGEDCOM RST2428P and SCALANCE X family switches, incorporate the affected Linux kernel code and are identified as impacted. The vulnerability is classified with CWE-833 (Deadlock) characteristics. No CVSS score is currently assigned in the available sources.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT SSA-613116 for detailed affected product versions and patch availability
  • Apply vendor-provided firmware updates for SINEC OS on affected SCALANCE and RUGGEDCOM devices
  • Implement network segmentation for industrial control systems per CISA ICS recommended practices
  • Monitor for anomalous behavior in hardware random number generator access patterns
  • Verify hwrng subsystem configurations on Linux-based industrial devices

Evidence notes

The vulnerability description is sourced from the Linux kernel commit message resolving the hwrng core page fault deadlock. Siemens ProductCERT identified affected products through their CSAF advisory SSA-613116. CISA's ICSA-25-226-15 advisory republishes this information with additional ICS-specific context. The threat assessment in the source material categorizes impact as 'Misinformed' for affected product IDs.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-52615 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-52615

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

  • CVE-2023-52615 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-52615

    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.