CVE-2024-26897

Kernel crash via premature ath9k WMI tasklet

Published Apr 17, 2024 · Updated May 23, 2026

Race condition in the ath9k_htc driver in Linux allows local users to crash the kernel during USB Wi-Fi device initialization. The ath9k_wmi_event_tasklet can process WMI events after the USB device is exposed but before driver data structures are fully initialized. Exploitation requires local access and a supported ath9k_htc USB device, with impact limited to a timing-dependent service interruption.

CVSS severity4.7
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

Race condition in the ath9k_htc driver in Linux allows local users to crash the kernel during USB Wi-Fi device initialization. The ath9k_wmi_event_tasklet can process WMI events after the USB device is exposed but before driver data structures are fully initialized. Exploitation requires local access and a supported ath9k_htc USB device, with impact limited to a timing-dependent service interruption.

The record

CVE
CVE-2024-26897
Published
Apr 17, 2024
Updated
May 23, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-20, CWE-362, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=5.10.136 <5.10.214; version=5.15.17 <5.15.153; version=5.16.3 <5.17; version=5.17; version=735aefae7b68025cd04c482a940c0f6fc6797a63 <f8ff4b4df71e87f609be0cc37d92e918107f9b90; version=78c8397132dd4735ac6a7b5a651302f0b9f264ad <1bc5461a21c56a36e2a7d81e152b90ce019a3905; version=7bbc1a50a7963f14048f0e54b0b73159f86d4ea3; version=8b3046abc99eefe11438090bcc4ec3a3994b55d0 <24355fcb0d4cbcb6ddda262596558e8cfba70f11; version=8b3046abc99eefe11438090bcc4ec3a3994b55d0 <4afa0246656d5680c8a4c3fb37ba6570c4ab819b; version=8b3046abc99eefe11438090bcc4ec3a3994b55d0 <74d0639261dd795dce958d1b14815bdcbb48a715; version=8b3046abc99eefe11438090bcc4ec3a3994b55d0 <a015fbf698c8957aa5fbeefc5c59dd2cf3107298; version=8b3046abc99eefe11438090bcc4ec3a3994b55d0 <ac90e22e735bac44f74b5161fb096fbeb0ff8bc2

Published CVSS scores

4.7Siemens ProductCERTCVSS:3.1/AV:L/AC:H/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
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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