CVE-2026-46308

Use-after-free via premature device-node reference release

Published Jun 8, 2026 · Updated Jun 8, 2026

Use-after-free in the MediaTek power-domain driver in Linux Kernel allows a stale device-node dereference during platform probe. scpsys_get_bus_protection_legacy() releases the node with of_node_put() before an error path passes that pointer to dev_err_probe(). Affected ranges are 6.18.0 through 6.18.29 and 6.19.0 through 7.0.6; the failure is kernel-internal and not attacker-influenceable, limiting impact to service interruption during driver probe.

CVSS severity7.8
High
EPSS probability0.11%
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 MediaTek power-domain driver in Linux Kernel allows a stale device-node dereference during platform probe. scpsys_get_bus_protection_legacy() releases the node with of_node_put() before an error path passes that pointer to dev_err_probe(). Affected ranges are 6.18.0 through 6.18.29 and 6.19.0 through 7.0.6; the failure is kernel-internal and not attacker-influenceable, limiting impact to service interruption during driver probe.

The record

CVE
CVE-2026-46308
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 8, 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=6.18
  2. Affected versionversion=c29345fa5f66bea0790cf2219f57b974d4fc177b <38d8410021b55d226847b2ac8d189d89fe5a8866
  3. Affected versionversion=c29345fa5f66bea0790cf2219f57b974d4fc177b <cb27e43c0511e9e1ca8818d231656070b11c18cf
  4. Affected versionversion=c29345fa5f66bea0790cf2219f57b974d4fc177b <ec1fcddb3117d9452210e838fd37389ee61e10e8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.18; version=c29345fa5f66bea0790cf2219f57b974d4fc177b <38d8410021b55d226847b2ac8d189d89fe5a8866; version=c29345fa5f66bea0790cf2219f57b974d4fc177b <cb27e43c0511e9e1ca8818d231656070b11c18cf; version=c29345fa5f66bea0790cf2219f57b974d4fc177b <ec1fcddb3117d9452210e838fd37389ee61e10e8

Published CVSS scores

7.8Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.7Amazon LinuxCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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