PatchSiren cyber security CVE debrief

CVE-2024-43908 Siemens CVE debrief

CVE-2024-43908 describes a null pointer dereference vulnerability in the Linux kernel's AMDGPU driver, specifically within the RAS (Reliability, Availability, and Serviceability) manager component. The vulnerability was published on August 12, 2025, and last modified on February 25, 2026. Siemens ProductCERT issued advisory SSA-355557 addressing this vulnerability in third-party components used within SINEC OS, which powers several Siemens industrial networking products including the RUGGEDCOM RST2428P and SCALANCE X-family switches. CISA subsequently republished this advisory as ICSA-25-226-07. The advisory's revision history indicates multiple updates, including corrections to affected product listings and clarification of affected configurations for the SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family. Notably, the threat assessment categorizes the impact as 'Misinformed' for the listed product IDs, suggesting potential documentation or reporting discrepancies in how this kernel-level vulnerability affects the specific Siemens product configurations. The vulnerability originates in the Linux kernel's DRM/AMDGPU subsystem and would typically require local access or specific driver interaction to trigger.

Vendor: Siemens
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 including RUGGEDCOM RST2428P switches and SCALANCE X-family (XC-300/XR-300/XC-400/XR-500WG/XR-500, XCM-/XRM-/XCH-/XRH-300) managed switches. System administrators responsible for SINEC OS deployments in industrial control environments. Security teams monitoring Linux kernel vulnerabilities affecting embedded industrial systems. Asset owners following CISA ICS advisory programs for critical infrastructure protection.

Technical summary

CVE-2024-43908 is a null pointer dereference vulnerability in the Linux kernel's AMDGPU DRM driver, specifically in the RAS (Reliability, Availability, and Serviceability) manager subsystem. The vulnerability exists in kernel code handling GPU error reporting and memory management. As a kernel driver issue, successful exploitation could potentially lead to system instability or denial of service conditions. The vulnerability affects Siemens products running SINEC OS that incorporate the vulnerable Linux kernel component. The advisory's 'Misinformed' threat categorization suggests uncertainty or correction in how this vulnerability applies to the specific product configurations, indicating defenders should verify actual exposure through vendor guidance rather than assuming direct applicability.

Defensive priority

medium

Recommended defensive actions

Review Siemens ProductCERT SSA-355557 advisory for detailed product-specific impact assessment and patch availability
Verify SINEC OS version on affected Siemens devices (RUGGEDCOM RST2428P, SCALANCE X-family) and apply vendor-provided updates
Assess whether local user access controls on affected systems mitigate kernel driver attack surface
Monitor CISA ICS advisories for updates to ICSA-25-226-07 as the advisory has undergone multiple revisions
Implement defense-in-depth strategies per CISA ICS recommended practices for industrial control systems

Evidence notes

Primary source is CISA CSAF advisory ICSA-25-226-07, which republishes Siemens ProductCERT SSA-355557. The advisory tracks this as a third-party component vulnerability in SINEC OS. Threat assessment shows 'Misinformed' impact category for affected product IDs CSAFPID-0006, CSAFPID-0002, and CSAFPID-0003. Revision history shows four versions: initial publication (2025-08-12), product list correction (2026-02-12), configuration clarification and rejected CVE removal (2026-02-24), and final CISA republication update (2026-02-25).

Official resources

2025-08-12