PatchSiren cyber security CVE debrief

CVE-2024-53097 Siemens CVE debrief

CVE-2024-53097 is a low-severity vulnerability (CVSS 3.3) in the Linux kernel's memory management subsystem, specifically affecting the krealloc function. The issue involves a Memory Tagging Extension (MTE) false alarm in __do_krealloc, which can trigger incorrect memory safety warnings. Siemens has identified this vulnerability as affecting multiple industrial networking products running SINEC OS, including the RUGGEDCOM RST2428P and SCALANCE switch families. The vulnerability requires local access and low privileges to exploit, with potential for limited availability impact. Siemens has released updates to address this issue, with fixes available in version 3.2 or later for affected products.

Vendor: Siemens
Product: RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS: LOW 3.3
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 RUGGEDCOM RST2428P switches or SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 and XCM-/XRM-/XCH-/XRH-300 family switches in industrial environments should prioritize patching to prevent potential service disruptions from false MTE alarms.

Technical summary

The vulnerability exists in the Linux kernel's mm/krealloc.c implementation where the __do_krealloc function generates false positive MTE (Memory Tagging Extension) alarms. MTE is an ARM64 security feature that tags memory allocations to detect use-after-free and buffer overflow conditions. The false alarm condition can cause legitimate memory reallocation operations to trigger incorrect security warnings. This affects Siemens industrial networking products that incorporate the vulnerable kernel code through SINEC OS. The CVSS vector (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L) indicates a local attack vector requiring low privileges, with no confidentiality or integrity impact and low availability impact.

Defensive priority

LOW

Recommended defensive actions

Apply vendor-provided updates to version 3.2 or later for affected Siemens RUGGEDCOM and SCALANCE products
Review Siemens ProductCERT advisory SSA-355557 for specific product configuration guidance
Follow CISA ICS recommended practices for defense-in-depth strategies
Monitor for additional vendor guidance on SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family configurations

Evidence notes

CVE published 2025-08-12 per CISA CSAF advisory ICSA-25-226-07. Modified 2026-02-25. Advisory republished by CISA based on Siemens ProductCERT SSA-355557.

Official resources

2025-08-12