PatchSiren cyber security CVE debrief

CVE-2024-56623 Linux CVE debrief

A use-after-free vulnerability in the Linux kernel's qla2xxx SCSI driver can cause system crashes. The vulnerability was initially reported as affecting Siemens industrial networking products running SINEC OS, but subsequent analysis determined these products are not actually vulnerable—the issue was misattributed due to third-party component tracking. The advisory has been revised multiple times to correct the product scope.

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 running Linux systems with QLogic Fibre Channel SCSI adapters; security teams who may have flagged Siemens industrial networking products based on earlier advisory versions

Technical summary

The vulnerability exists in the qla2xxx QLogic Fibre Channel SCSI driver in the Linux kernel. A use-after-free condition can trigger system crashes with visible stack trace warnings. This is a kernel-level driver issue, not a vulnerability in Siemens product code. The initial advisory incorrectly associated this CVE with Siemens SINEC OS-based products (RUGGEDCOM RST2428P, SCALANCE XC/XR/XCM/XRM families); subsequent revisions moved all products to 'Known Not Affected' status. Organizations running Linux systems with QLogic Fibre Channel adapters should follow standard kernel security practices. Siemens product users do not require specific remediation for this CVE.

Defensive priority

low

Recommended defensive actions

Verify that affected product lists from earlier versions of this advisory are not used for vulnerability prioritization
Review kernel driver update status for qla2xxx if running Linux-based systems with QLogic Fibre Channel adapters
Apply standard kernel security updates through normal distribution channels for Linux systems using qla2xxx hardware
For Siemens SINEC OS deployments, no specific action is required for this CVE per corrected advisory

Evidence notes

The source advisory (ICSA-25-226-07) explicitly marks this CVE as 'Misinformed' in its impact assessment. The February 2026 revision history states: 'Corrected list of Affected Products and moved entries to Known Not Affected Products.' The affected product count is zero in the source metadata.

Official resources

2025-08-12