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CVE-2024-49907 Siemens CVE debrief

CVE-2024-49907 describes a missing null pointer check in the Linux kernel's AMD display driver (drm/amd/display) before using dc->clk_mgr. The vulnerability was originally published on 2025-08-12 and last modified on 2026-02-25. CISA's ICS advisory ICSA-25-226-07, which was republished on 2026-02-25 based on Siemens ProductCERT advisory SSA-355557, marks this CVE as **Misinformed** for the listed Siemens products—meaning the vulnerability does not actually affect these products as initially assessed. The affected product list was corrected in a February 2026 revision, moving entries to the Known Not Affected Products category. No CVSS score or severity is available in the source corpus.

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 RST2428P or SCALANCE networking equipment who may have seen this CVE in early versions of ICSA-25-226-07; security teams tracking kernel vulnerabilities for AMD GPU systems should consult upstream Linux kernel security advisories for actual impact assessment

Technical summary

This CVE identifies a missing null pointer check in the drm/amd/display subsystem of the Linux kernel, specifically before dereferencing dc->clk_mgr. The vulnerability is a classic null pointer dereference (CWE-476) that could lead to kernel crashes or undefined behavior. However, CISA's advisory ICSA-25-226-07 explicitly marks this CVE as **Misinformed** for the Siemens products originally listed, indicating that the vulnerability does not actually affect these industrial networking devices. The advisory underwent multiple revisions between August 2025 and February 2026 to correct the affected product list. The underlying kernel vulnerability may still affect actual AMD GPU systems running vulnerable Linux kernel versions, but this is outside the scope of the Siemens/CISA advisory context.

Defensive priority

low

Recommended defensive actions

  • Verify that affected product lists from early versions of ICSA-25-226-07 have been updated to reflect the corrected status
  • Review Siemens ProductCERT advisory SSA-355557 for authoritative product impact assessment
  • No patching action required for Siemens RUGGEDCOM RST2428P or SCALANCE families based on current advisory status
  • Maintain standard ICS security practices per CISA recommended practices

Evidence notes

The source CSAF document explicitly categorizes the impact of CVE-2024-49907 as 'Misinformed' for the listed Siemens product IDs (CSAFPID-0006, CSAFPID-0002, CSAFPID-0003). The revision history shows this CVE was included in initial publication but the affected product list was subsequently corrected. The vulnerability description indicates a kernel-level null pointer dereference issue in AMD display driver code, which is not applicable to the Siemens networking equipment listed.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-49907 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-49907

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

  • CVE-2024-49907 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-49907

    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.