CVE-2024-57981

Kernel crash via stale xHCI command state

Published Feb 27, 2025 · Updated May 12, 2026

NULL pointer dereference in the xHCI command-ring handler in affected Linux kernels allows local users to crash the kernel through a crafted USB device. After an aborted command advances the dequeue pointer, xhci_handle_stopped_cmd_ring() mistakes unequal ring pointers for a pending command and arms a timer with a NULL cur_cmd. Triggering requires control of a USB device and the precise final-TRB command placement and abort sequence; the demonstrated consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the xHCI command-ring handler in affected Linux kernels allows local users to crash the kernel through a crafted USB device. After an aborted command advances the dequeue pointer, xhci_handle_stopped_cmd_ring() mistakes unequal ring pointers for a pending command and arms a timer with a NULL cur_cmd. Triggering requires control of a USB device and the precise final-TRB command placement and abort sequence; the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2024-57981
Published
Feb 27, 2025
Updated
May 12, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 27, 2025CVE 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=3.16; version=c311e391a7efd101250c0e123286709b7e736249 <0ce5c0dac768be14afe2426101b568a0f66bfc4d; version=c311e391a7efd101250c0e123286709b7e736249 <1e0a19912adb68a4b2b74fd77001c96cd83eb073; version=c311e391a7efd101250c0e123286709b7e736249 <4ff18870af793ce2034a6ad746e91d0a3d985b88; version=c311e391a7efd101250c0e123286709b7e736249 <ae069cd2ba09a2bd6a87a68c59ef0b7ea39cd641; version=c311e391a7efd101250c0e123286709b7e736249 <b44253956407046e5907d4d72c8fa5b93ae94485; version=c311e391a7efd101250c0e123286709b7e736249 <b649f0d5bc256f691c7d234c3986685d54053de1; version=c311e391a7efd101250c0e123286709b7e736249 <cf30300a216a4f8dce94e11781a866a09d4b50d4; version=c311e391a7efd101250c0e123286709b7e736249 <fd8bfaeba4a85b14427899adec0efb3954300653
Siemens · SIMATIC S7-1500 TM MFP - BIOSversion=0 <*

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

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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-476NULL Pointer Dereference
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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