PatchSiren cyber security CVE debrief

CVE-2024-26790 Linux CVE debrief

A vulnerability in the Linux kernel's Freescale QDMA engine driver (fsl-qdma) could cause System-on-Chip (SoC) hangs when performing 16-byte unaligned memory reads. The issue was resolved in the Linux kernel. Siemens has assessed this CVE as 'Misinformed' for its affected industrial networking products, indicating the vulnerability does not apply to these specific product configurations.

Vendor: Linux
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 operating Siemens industrial networking equipment (SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, SCALANCE XCM-/XRM-/XCH-/XRH-300 family, RUGGEDCOM RST2428P) running SINEC OS should verify their security posture against vendor guidance, though this specific CVE is assessed as not applicable to these products.

Technical summary

The vulnerability exists in the Freescale QDMA (Queue-based Direct Memory Access) engine driver within the Linux kernel. Specifically, 16-byte unaligned read operations could trigger SoC hangs. The fix ensures proper handling of unaligned memory access in the DMA engine. While the underlying kernel vulnerability is real, Siemens has determined that their specific product implementations (SINEC OS-based devices including SCALANCE and RUGGEDCOM families) are not affected by this issue, marking it as 'Misinformed' in their security assessment.

Defensive priority

low

Recommended defensive actions

Verify SINEC OS and SCALANCE/RUGGEDCOM device firmware versions against vendor security advisory SSA-613116
Apply Siemens-recommended patches or updates if applicable to your product deployment
Follow CISA ICS recommended practices for defense-in-depth strategies
Monitor Siemens ProductCERT advisories for any future reassessment of this CVE

Evidence notes

The source advisory (ICSA-25-226-15) explicitly categorizes the impact of this CVE as 'Misinformed' for all listed Siemens product IDs (CSAFPID-0001, CSAFPID-0003, CSAFPID-0004). The vulnerability description indicates a kernel-level DMA engine issue that was resolved upstream. The advisory was republished by CISA on 2026-02-25 based on Siemens ProductCERT SSA-613116.

Official resources

2025-08-12