CVE-2024-26895

System crash via freed vif list traversal

Published Apr 17, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux wilc1000 Wi-Fi driver allows local users to crash the system during network-interface cleanup. wilc_netdev_cleanup unregisters a netdevice-backed vif while traversing the vif list, then follows the freed vif pointer on the next iteration. Exploitation requires local low-privileged access and cleanup of a WILC1000 interface; the demonstrated consequence is a kernel crash.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux wilc1000 Wi-Fi driver allows local users to crash the system during network-interface cleanup. wilc_netdev_cleanup unregisters a netdevice-backed vif while traversing the vif list, then follows the freed vif pointer on the next iteration. Exploitation requires local low-privileged access and cleanup of a WILC1000 interface; the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2024-26895
Published
Apr 17, 2024
Updated
Aug 5, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-20, CWE-416, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.5; version=8399918f3056e1033f0f4c08eab437fb38d6f22d <24228dcf1d30c2231caa332be7d3090ac59fbfe9; version=8399918f3056e1033f0f4c08eab437fb38d6f22d <3da9d32b7f4a1a9f7e4bb15bb82f2b2dd6719447; version=8399918f3056e1033f0f4c08eab437fb38d6f22d <5956f4203b6cdd0755bbdd21b45f3933c7026208; version=8399918f3056e1033f0f4c08eab437fb38d6f22d <73a2aa0aef86c2c07be5a2f42c9e6047e1a2f7bb; version=8399918f3056e1033f0f4c08eab437fb38d6f22d <a9545af2a533739ffb64d6c9a6fec6f13e2b505f; version=8399918f3056e1033f0f4c08eab437fb38d6f22d <cb5942b77c05d54310a0420cac12935e9b6aa21c; version=8399918f3056e1033f0f4c08eab437fb38d6f22d <fe20e3d56bc911408fc3c27a17c59e9d7885f7d1

Published CVSS scores

5.5Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-416Use After Free
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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