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CVE-2023-52804 Siemens CVE debrief

This CVE addresses a vulnerability in the Linux kernel's Journaled File System (JFS) implementation. The issue involves missing validity checks for the `db_maxag` and `db_agpref` fields, which could lead to improper handling of allocation group parameters. The vulnerability was resolved by adding appropriate validation checks to ensure these values remain within expected bounds. Siemens has identified this CVE as affecting certain industrial networking products in their SCALANCE and RUGGEDCOM product lines, as documented in their ProductCERT advisory. The CISA ICS advisory (ICSA-25-226-15) was initially published on August 12, 2025, with subsequent revisions through February 25, 2026, to correct affected product listings and incorporate updates from Siemens' advisory. Notably, the threat assessment in the source material categorizes the impact as 'Misinformed' for the listed product IDs, suggesting potential discrepancies in initial vulnerability reporting or scope. Organizations operating affected Siemens industrial networking equipment should consult the vendor's security advisory for specific patch availability and version guidance.

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 SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, SCALANCE XCM-/XRM-/XCH-/XRH-300 family, or RUGGEDCOM RST2428P industrial networking equipment; security teams managing Linux-based industrial control systems with JFS filesystems; OT security practitioners tracking kernel-level vulnerabilities in embedded industrial systems

Technical summary

The vulnerability exists in the Linux kernel's JFS (Journaled File System) implementation where `db_maxag` (maximum allocation group) and `db_agpref` (preferred allocation group) parameters lacked proper bounds validation. The resolution adds explicit validity checks to prevent potential issues arising from malformed or out-of-range values in these filesystem parameters. This is a defensive hardening measure in the kernel's filesystem layer.

Defensive priority

medium

Recommended defensive actions

  • Review Siemens ProductCERT advisory SSA-613116 for affected product versions and patch availability
  • Verify JFS filesystem usage on applicable Linux-based Siemens industrial systems
  • Apply vendor-provided firmware or software updates when available
  • Monitor CISA ICS advisories for additional guidance on industrial control system security practices
  • Implement network segmentation for critical industrial control systems as recommended in CISA ICS security guidelines

Evidence notes

The vulnerability description is derived from the Linux kernel commit message indicating a resolution through added validity checks. Vendor attribution to Siemens is based on CSAF product tree data with high confidence. The 'Misinformed' threat categorization appears in the source CSAF document's threats section for product IDs CSAFPID-0001, CSAFPID-0003, and CSAFPID-0004.

Official resources

This CVE was published on August 12, 2025, and last modified on February 25, 2026. The source advisory (ICSA-25-226-15) underwent multiple revisions, with the most significant update on February 25, 2026, reflecting republication based onS