PatchSiren

PatchSiren cyber security CVE debrief

CVE-2024-42092 Siemens CVE debrief

A vulnerability in the Linux kernel's GPIO Davinci driver could allow out-of-bounds array access during device probe. The flaw exists in davinci_gpio_probe() where improper bounds checking on the chips->irqs array may lead to memory corruption. This affects Siemens industrial networking products running SINEC OS that incorporate the vulnerable kernel component. The vulnerability has a CVSS score of 5.5 (MEDIUM severity). CISA published advisory ICSA-25-226-07 on August 12, 2025, with subsequent updates through February 25, 2026, to clarify affected product configurations and remove rejected CVEs from the advisory.

Vendor
Siemens
Product
RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS
MEDIUM 5.5
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 including RUGGEDCOM RST2428P and SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family devices running SINEC OS. Industrial control system operators and OT security teams should prioritize monitoring vendor advisories for patch availability.

Technical summary

The vulnerability resides in the davinci_gpio_probe() function within the Linux kernel's GPIO Davinci driver. An out-of-bounds access to the chips->irqs array can occur during device probing, potentially resulting in memory corruption. This is a classic array bounds checking issue in kernel driver initialization code. The flaw affects Siemens industrial networking products that utilize the vulnerable kernel component as part of SINEC OS.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-355557 for detailed product impact and patch availability
  • Verify SINEC OS and underlying kernel versions on affected Siemens industrial networking equipment
  • Apply vendor-provided firmware updates when available per Siemens security advisory guidance
  • Monitor CISA ICS advisories for additional updates to ICSA-25-226-07
  • Implement network segmentation for industrial control systems per CISA recommended practices
  • Follow defense-in-depth strategies for ICS environments as outlined in CISA guidance

Evidence notes

Source: CISA CSAF advisory ICSA-25-226-07. The advisory was initially published on 2025-08-12 and subsequently updated on 2026-02-12, 2026-02-24, and 2026-02-25. The February 25, 2026 update was a republication based on Siemens ProductCERT SSA-355557 advisory. The threat category is marked as 'Misinformed' in the source data for affected products.

Official resources

2025-08-12