CVE-2026-64492

System crash via dangling IIO trigger

Published Jul 25, 2026 · Updated Jul 25, 2026

Use-after-free in the tmp006 IIO temperature driver in Linux Kernel allows local users to crash the system after module unload. The tmp006_probe() path gives the DRDY trigger a device-managed lifetime but registers it globally without managed cleanup, so unload frees the object while its list entry remains reachable. Exploitation requires high local privileges to unload the driver module, and the published assessment limits the consequence to availability loss.

CVSS severity4.1
Medium
EPSS probability0.17%
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 tmp006 IIO temperature driver in Linux Kernel allows local users to crash the system after module unload. The tmp006_probe() path gives the DRDY trigger a device-managed lifetime but registers it globally without managed cleanup, so unload frees the object while its list entry remains reachable. Exploitation requires high local privileges to unload the driver module, and the published assessment limits the consequence to availability loss.

The record

CVE
CVE-2026-64492
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1529
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.13
  2. Affected versionversion=91f75ccf9f032e17cde54f0c01eae2da4f067bc5 <3c5eed894efd93d68d7f6a359a81ddef0e928774
  3. Affected versionversion=91f75ccf9f032e17cde54f0c01eae2da4f067bc5 <a4f8491da9563ba6eb77969ac26fc7052114c476
  4. Affected versionversion=91f75ccf9f032e17cde54f0c01eae2da4f067bc5 <d90f868f56a16e10eedc6552f48d99dff4d275b7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.13; version=91f75ccf9f032e17cde54f0c01eae2da4f067bc5 <3c5eed894efd93d68d7f6a359a81ddef0e928774; version=91f75ccf9f032e17cde54f0c01eae2da4f067bc5 <a4f8491da9563ba6eb77969ac26fc7052114c476; version=91f75ccf9f032e17cde54f0c01eae2da4f067bc5 <d90f868f56a16e10eedc6552f48d99dff4d275b7

Published CVSS scores

4.1Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1529System Shutdown/Reboot

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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