CVE-2024-38589

Local system hang via inverted NET/ROM lock order

Published Jun 19, 2024 · Updated May 12, 2026

Deadlock in Linux kernel NET/ROM routing code allows local users to hang affected systems through a routing ioctl. nr_rt_ioctl() can acquire nr_node_list_lock and nr_node->node_lock in the opposite order used by nr_del_node(), creating a circular wait. Exploitation requires local low-privileged access capable of issuing the NET/ROM routing ioctl, and the documented consequence is a system hang.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deadlock in Linux kernel NET/ROM routing code allows local users to hang affected systems through a routing ioctl. nr_rt_ioctl() can acquire nr_node_list_lock and nr_node->node_lock in the opposite order used by nr_del_node(), creating a circular wait. Exploitation requires local low-privileged access capable of issuing the NET/ROM routing ioctl, and the documented consequence is a system hang.

The record

CVE
CVE-2024-38589
Published
Jun 19, 2024
Updated
May 12, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-20, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 2024CVE publishedPublication date reported by the CVE source.
  2. May 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1fbfb483c1a290dce3f41f52d45cc46dd88b7691; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3db2fc45d1d2a6457f06ebdfd45b9820e5b5c2b7; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <421c50fa81836775bf0fd6ce0e57a6eb27af24d5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5bc50a705cfac8f64ce51c95611c3dd0554ef9c3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5fb7e2a4335fc67d6952ad2a6613c46e0b05f7c5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b117e5b4f27c2c9076561b6be450a9619f0b79de; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b9d663fbf74290cb68fbc66ae4367bd56837ad1d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e03e7f20ebf7e1611d40d1fdc1bde900fd3335f6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f28bdc2ee5d9300cc77bd3d97b5b3cdd14960fd8; version=2.6.12
Siemens · SCALANCE XCM/XRM/XCH/XRH-300 familyversion=0 <V3.1
Siemens · RUGGEDCOM RST2428Pversion=0 <V3.1

Published CVSS scores

5.5Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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