CVE-2024-36484 Siemens CVE debrief

Who should care

Organizations running Linux-based systems, particularly those with Siemens industrial networking equipment using SINEC OS, should prioritize this patch. System administrators managing SCALANCE and RUGGEDCOM device families should review their kernel versions and apply applicable security updates.

Technical summary

This vulnerability exists in the Linux kernel's networking stack, specifically in the socket acceptance logic. The overly strict socket state verification during the accept() operation could cause improper handling of incoming connections. The resolution involves relaxing these state checks to ensure proper socket state transitions during connection establishment.

Defensive priority

medium

Recommended defensive actions

• Review Linux kernel version in use and apply vendor-provided security patches addressing CVE-2024-36484
• For Siemens SINEC OS deployments, consult Siemens ProductCERT advisory SSA-355557 for specific patch guidance
• Verify network socket handling configurations in affected industrial control systems
• Monitor vendor security advisories for additional third-party component updates
• Apply defense-in-depth strategies for industrial control systems per CISA recommended practices

Evidence notes

The vulnerability description indicates a resolution in the Linux kernel related to socket state validation during connection acceptance. The CISA advisory ICSA-25-226-07, republished on 2026-02-25, references this CVE as part of Siemens' third-party component security assessment for SINEC OS. The advisory's threat assessment categorizes impact as 'Misinformed' for affected product configurations.

Official resources