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CVE-2024-44998 Siemens CVE debrief

CVE-2024-44998 describes a use-after-free vulnerability in the Linux kernel's ATM (Asynchronous Transfer Mode) driver, specifically in the idt77252 driver's dequeue_rx() function. The vulnerability was published on August 12, 2025, and last modified on February 25, 2026. Siemens has assessed this CVE as affecting certain industrial networking products that incorporate third-party Linux components, including the RUGGEDCOM RST2428P and SCALANCE X-family devices running SINEC OS. However, the CISA advisory ICSA-25-226-07 marks the impact assessment as 'Misinformed' for the affected product IDs, suggesting potential clarification or correction in the vulnerability's applicability to these specific Siemens products. The advisory underwent multiple revisions, with the most significant update on February 25, 2026, republishing based on Siemens ProductCERT's SSA-355557 advisory. Organizations should verify actual affected status through Siemens ProductCERT documentation and apply kernel updates as appropriate for their Linux-based systems.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
HIGH 7.8
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 equipment running SINEC OS, particularly SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, SCALANCE XCM-/XRM-/XCH-/XRH-300 family, and RUGGEDCOM RST2428P switches. Linux system administrators managing ATM networking infrastructure. Industrial control system operators relying on ATM-based WAN connectivity. Security teams tracking third-party component vulnerabilities in embedded industrial systems.

Technical summary

A use-after-free condition exists in the dequeue_rx() function of the Linux kernel's ATM (Asynchronous Transfer Mode) idt77252 driver. This vulnerability type typically occurs when memory is freed while still being referenced, potentially leading to memory corruption, denial of service, or code execution. The vulnerability affects kernel-level networking code handling ATM receive queue operations. Siemens has included this CVE in their assessment of third-party Linux components present in SINEC OS, which powers various industrial Ethernet switches including SCALANCE X-family and RUGGEDCOM devices. However, the CISA advisory marks the impact as 'Misinformed' for the listed product IDs, indicating the need for verification against Siemens' authoritative ProductCERT guidance.

Defensive priority

MEDIUM

Recommended defensive actions

  • Verify actual affected status through Siemens ProductCERT SSA-355557 documentation before prioritizing response actions
  • Review kernel version and ATM driver configuration on Linux-based industrial systems
  • Apply vendor-provided firmware updates for affected Siemens SCALANCE and RUGGEDCOM products when confirmed applicable
  • Monitor CISA ICS advisories for updates to ICSA-25-226-07 as the advisory has undergone multiple revisions
  • Implement network segmentation for ATM-related network infrastructure pending clarification of affected status

Evidence notes

CVE published 2025-08-12; modified 2026-02-25. Source CISA ICSA-25-226-07. Impact marked 'Misinformed' for affected product IDs CSAFPID-0006, CSAFPID-0002, CSAFPID-0003. Advisory revised 4 times, with final republication based on Siemens SSA-355557.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-44998 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-44998

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

  • CVE-2024-44998 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-44998

    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-25-226-07.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-355557.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-355557.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-07

    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.