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PatchSiren cyber security CVE debrief

CVE-2024-26898 Siemens CVE debrief

A use-after-free vulnerability exists in the Linux kernel's ATA over Ethernet (AoE) subsystem, specifically within the aoecmd_cfg_pkts function. This flaw could allow a local attacker with low privileges to potentially achieve high confidentiality, integrity, and availability impacts. The vulnerability was resolved in the upstream Linux kernel. Siemens has identified this issue as affecting the GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP industrial control device. As of the advisory publication, no patch is available from Siemens for the affected product.

Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2024-04-17
Original CVE updated
2026-08-04
Advisory published
2024-04-17
Advisory updated
2026-08-04

Who should care

Organizations operating Siemens SIMATIC S7-1500 TM MFP devices with the GNU/Linux subsystem enabled, particularly in industrial control system environments. Security teams responsible for OT/ICS infrastructure, system integrators deploying these devices, and administrators managing embedded Linux subsystems on industrial equipment.

Technical summary

The vulnerability exists in the aoecmd_cfg_pkts function of the Linux kernel's ATA over Ethernet (AoE) driver. A use-after-free condition can occur, potentially allowing an attacker to corrupt memory and escalate privileges. The attack requires local access with low privileges and has high attack complexity. The vulnerability was fixed in upstream Linux kernel source code. Siemens has confirmed that the GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP is affected, but no vendor patch is currently available. Mitigations focus on access control and trusted application execution.

Defensive priority

HIGH

Recommended defensive actions

  • Restrict interactive shell access to the GNU/Linux subsystem to trusted personnel only
  • Only build and execute applications from trusted sources
  • Monitor for future Siemens security advisories providing patches for the SIMATIC S7-1500 TM MFP
  • Apply defense-in-depth strategies for industrial control systems per CISA guidance
  • Review network segmentation to limit exposure of affected devices

Evidence notes

The vulnerability description is sourced from the Linux kernel commit message resolving the issue. Siemens confirmed impact to SIMATIC S7-1500 TM MFP GNU/Linux subsystem via CSAF advisory ICSA-24-102-01. CVSS 3.1 vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H indicates local attack vector with high attack complexity, requiring low privileges but no user interaction, with high impacts across all three security dimensions.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-26898 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-26898

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

  • CVE-2024-26898 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-26898

    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/2024/icsa-24-102-01.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-265688.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-265688.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-102-01

    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.