PatchSiren cyber security CVE debrief

CVE-2024-58051 Siemens CVE debrief

CVE-2024-58051 is a medium-severity vulnerability (CVSS 3.1: 5.5) in the Linux kernel's IPMI IPMB driver, affecting the Siemens SIMATIC S7-1500 TM MFP industrial control system's GNU/Linux subsystem. The flaw involves a missing null pointer check on the return value of devm_kasprintf(), which can lead to a denial-of-service condition when memory allocation fails. Published on 2024-04-09 and last modified on 2026-05-14, this vulnerability is not listed in CISA's Known Exploited Vulnerabilities catalog. The affected product is the SIMATIC S7-1500 TM MFP's additional GNU/Linux subsystem, which provides an embedded Linux environment for running custom applications alongside the primary PLC runtime. No patch is currently available from Siemens.

Vendor: Siemens
Product: SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
CVSS: MEDIUM 5.5
CISA KEV: Not listed in stored evidence
Original CVE published: 2024-04-09
Original CVE updated: 2026-05-14
Advisory published: 2024-04-09
Advisory updated: 2026-05-14

Who should care

Industrial control system operators, OT security engineers, and asset owners deploying Siemens SIMATIC S7-1500 TM MFP modules in manufacturing, process control, or critical infrastructure environments. Organizations utilizing the GNU/Linux subsystem for custom edge applications should prioritize access controls until a patch becomes available.

Technical summary

The vulnerability exists in the IPMI IPMB (Intelligent Platform Management Interface - IP Management Bus) driver within the Linux kernel. The devm_kasprintf() function, which allocates memory and formats a string, can return NULL on allocation failure. The driver fails to check this return value before dereferencing the pointer, leading to a null pointer dereference and potential system crash. This affects the GNU/Linux subsystem of the Siemens SIMATIC S7-1500 TM MFP, an industrial PC module that combines PLC functionality with an embedded Linux environment for edge computing applications. The local attack vector requires an attacker to have low-privilege access to the Linux subsystem to trigger the vulnerable code path.

Defensive priority

medium

Recommended defensive actions

Restrict interactive shell access to the GNU/Linux subsystem to trusted personnel only
Build and run applications exclusively from trusted sources
Monitor for future Siemens security advisories regarding patch availability
Apply defense-in-depth strategies for industrial control system environments
Review and implement CISA ICS recommended practices for securing embedded Linux subsystems in OT environments

Evidence notes

Vulnerability description and affected product confirmed through CISA CSAF advisory ICSA-24-102-01. CVSS vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H indicates local attack vector with low attack complexity, requiring low privileges, resulting in high availability impact. The flaw is classified under CWE-20 (Improper Input Validation). Remediation guidance indicates no fix is currently available.

Official resources

2024-04-09