PatchSiren cyber security CVE debrief

CVE-2023-52654 Linux CVE debrief

This CVE addresses a vulnerability in the Linux kernel's io_uring subsystem related to AF_UNIX sockets. The fix disables the ability to send io_uring file descriptors over Unix domain sockets, which could potentially be exploited to manipulate or corrupt kernel memory structures. The vulnerability was resolved by preventing this specific capability in the kernel's networking code. Siemens has assessed this CVE as 'Misinformed' for their affected industrial control system products, indicating the vulnerability does not actually impact these systems as initially reported. The advisory was first published by CISA on August 12, 2025, and subsequently updated multiple times through February 25, 2026, with the most recent revision correcting product impact assessments and removing rejected CVEs from related advisories.

Vendor: Linux
Product: RUGGEDCOM RST2428P (6GK6242-6PA00)
CVSS: HIGH 7.8
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 io_uring enabled and AF_UNIX socket usage should verify kernel patch status. Industrial operators using Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, SCALANCE XCM-/XRM-/XCH-/XRH-300 family, or RUGGEDCOM RST2428P devices should note the vendor's 'Misinformed' assessment but maintain standard security practices.

Technical summary

The vulnerability exists in the Linux kernel's io_uring asynchronous I/O interface when combined with AF_UNIX socket operations. The kernel fix prevents sending io_uring file descriptors over Unix domain sockets, which could otherwise lead to use-after-free or memory corruption conditions. The specific technical mechanism involves restricting SCM_RIGHTS-style file descriptor passing for io_uring instances. Siemens products running SINEC OS and SCALANCE network devices were initially assessed but subsequently determined to be not affected ('Misinformed' impact rating).

Defensive priority

low

Recommended defensive actions

Verify current SINEC OS and SCALANCE firmware versions against vendor security advisories
Review Siemens ProductCERT SSA-613116 for definitive product impact assessments
Apply standard defense-in-depth practices for industrial control systems per CISA guidance
Monitor CISA ICS advisories for future updates to this vulnerability assessment

Evidence notes

The source advisory explicitly categorizes the impact of this CVE as 'Misinformed' for all listed Siemens product IDs (CSAFPID-0001, CSAFPID-0003, CSAFPID-0004). The Linux kernel fix description indicates the vulnerability was resolved by disabling io_uring transmission over AF_UNIX sockets. No CVSS score or severity rating is provided in the source material.

Sources and references

Verified primary and authoritative sources

CVE-2023-52654 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2023-52654

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2023-52654 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2023-52654

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source item URL
Unverified legacy reference

URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-226-15.json

cisa_csaf
Source reference
Unverified legacy reference

URL: https://cert-portal.siemens.com/productcert/csaf/ssa-613116.json

Reference
Source reference
Unverified legacy reference

URL: https://cert-portal.siemens.com/productcert/html/ssa-613116.html

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-15

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/topics/industrial-control-systems

Reference
Source reference
Unverified legacy reference

URL: https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.