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PatchSiren cyber security CVE debrief

CVE-2024-58058 Siemens CVE debrief

A NULL pointer dereference vulnerability in the UBIFS (Unsorted Block Image File System) implementation of the Linux kernel. The flaw occurs when the TNC (Tree Node Cache) tree dumping routine fails to validate that the zroot pointer is non-NULL before dereferencing it. This can lead to a kernel crash (denial of service) when triggered by a local attacker with low privileges. The vulnerability affects Siemens SIMATIC S7-1500 TM MFP industrial control systems that utilize the GNU/Linux subsystem.

Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-28
Advisory published
2026-07-14
Advisory updated
2026-07-28

Who should care

Industrial control system operators, OT security teams, and Siemens SIMATIC S7-1500 TM MFP administrators should prioritize this vulnerability. Organizations in manufacturing, process control, and critical infrastructure sectors using this platform are at risk of denial-of-service conditions that could disrupt operational technology environments.

Technical summary

The vulnerability exists in the UBIFS file system implementation within the Linux kernel. Specifically, the TNC tree dumping functionality does not check whether the zroot pointer is NULL before attempting to use it. This NULL pointer dereference can be triggered during file system operations, resulting in a kernel oops or panic. The flaw is classified as CWE-476 (NULL Pointer Dereference). The affected product is the Siemens SIMATIC S7-1500 TM MFP with its GNU/Linux subsystem, commonly deployed in industrial automation environments. No patch is currently available per vendor advisory; mitigation relies on access controls and trusted application sourcing.

Defensive priority

medium

Recommended defensive actions

  • Restrict interactive shell access to the GNU/Linux subsystem to trusted personnel only
  • Build and run applications exclusively from trusted sources
  • Monitor for kernel crashes or unexpected reboots on affected systems
  • Apply vendor patches when Siemens releases firmware updates addressing this vulnerability
  • Implement network segmentation to limit access to industrial control system components

Evidence notes

CVE published 2024-04-09; CISA advisory ICSA-24-102-01 published same date. Advisory last modified 2026-05-14 with multiple revision updates through Additional Release 9 (2025-09-09). CVSS 3.1 vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H confirms local attack vector with low privileges required, no confidentiality or integrity impact, high availability impact.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-58058 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-58058

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

  • CVE-2024-58058 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-58058

    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.