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PatchSiren cyber security CVE debrief

CVE-2024-49965 Siemens CVE debrief

CVE-2024-49965 is a vulnerability in the OCFS2 (Oracle Cluster File System 2) Linux kernel driver, specifically in the ocfs2_read_blocks function. The issue involves an unreasonable unlock operation that could lead to race conditions or improper synchronization. The vulnerability was published on August 12, 2025, and last modified on February 25, 2026. Siemens has identified this CVE as affecting certain industrial networking products running SINEC OS, including the RUGGEDCOM RST2428P and SCALANCE X-family switches. However, the CISA advisory marks the impact assessment as 'Misinformed,' suggesting potential discrepancies in the initial vulnerability reporting or applicability to the listed Siemens products. No CVSS score or severity rating is currently available. The vulnerability is not listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, and there is no indication of known ransomware campaign use. Organizations should consult Siemens ProductCERT advisory SSA-355557 for authoritative product-specific guidance and patch availability.

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 RUGGEDCOM RST2428P or SCALANCE X-family industrial Ethernet switches; OT security teams managing SINEC OS deployments; Linux kernel maintainers tracking OCFS2 stability fixes; CISOs responsible for industrial control system vulnerability management programs

Technical summary

The vulnerability exists in the OCFS2 (Oracle Cluster File System 2) Linux kernel driver's ocfs2_read_blocks function, where an unreasonable unlock operation could potentially cause race conditions. OCFS2 is a shared-disk cluster filesystem typically used in high-availability Linux server environments, not standard functionality for industrial Ethernet switches. The CVE was included in a Siemens SINEC OS third-party components advisory but marked with 'Misinformed' impact, suggesting the vulnerability may not be exploitable in the listed product contexts or was incorrectly attributed. The patch series reference ('Misc fixes for ocfs2_read_blocks', v5) indicates this was addressed as part of broader OCFS2 stability improvements in the upstream Linux kernel.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-355557 for authoritative product-specific impact assessment and patch guidance
  • Verify whether affected Siemens products (RUGGEDCOM RST2428P, SCALANCE X-family) are deployed in your environment
  • Assess exposure to OCFS2 filesystem functionality, which is atypical for industrial Ethernet switch deployments
  • Monitor CISA ICS advisories for updates to the 'Misinformed' impact classification
  • Apply defense-in-depth practices for industrial control systems per CISA guidance pending definitive patch availability

Evidence notes

The source CISA CSAF advisory (ICSA-25-226-07) explicitly marks the impact of this CVE as 'Misinformed' in the threats section, indicating the vulnerability may have been incorrectly attributed or assessed for the listed Siemens products. The CVE description references an OCFS2 kernel patch series for ocfs2_read_blocks, which is a Linux cluster filesystem component not typically exposed in industrial Ethernet switch deployments. The advisory revision history shows multiple updates correcting affected product lists and removing rejected CVEs, suggesting ongoing vetting of vulnerability applicability.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-49965 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-49965

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

  • CVE-2024-49965 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-49965

    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.