CVE-2026-64246

Memory corruption via premature device-tree node release

Published Jul 24, 2026 · Updated Jul 24, 2026

Use-after-free in the Linux Kernel linkstation-poweroff driver allows local users to corrupt memory and interrupt service. The linkstation_poweroff_init() function releases the device-tree node with of_node_put(dn) before of_match_node() finishes reading that pointer. Reachability requires initialization of the LinkStation power-off driver on compatible hardware; the invalid access can destabilize or crash the kernel.

CVSS severity7.8
High
EPSS probability0.12%
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 Kernel linkstation-poweroff driver allows local users to corrupt memory and interrupt service. The linkstation_poweroff_init() function releases the device-tree node with of_node_put(dn) before of_match_node() finishes reading that pointer. Reachability requires initialization of the LinkStation power-off driver on compatible hardware; the invalid access can destabilize or crash the kernel.

The record

CVE
CVE-2026-64246
Published
Jul 24, 2026
Updated
Jul 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 24, 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=5.15
  2. Affected versionversion=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <2205275be9be981e70ff29610b0117d8853fac70
  3. Affected versionversion=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <3928ae803dee044b01076c478c279c0bd54164cd
  4. Affected versionversion=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <8eec545cde69e46e9a1d2b7d915ce4f5df85b3bd
  5. Affected versionversion=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <93c7ee139721936b6fa717572e74d3994603ae13
  6. Affected versionversion=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <c04d606f8b35ee7d3ed243f63893a607e9d6c0bc
  7. Affected versionversion=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <cdda7d384c05485a232ae9a849f6445accb095bf
  8. Affected versionversion=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <d109e72f3fbccb540473285d17d7519584f7f76e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.15; version=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <2205275be9be981e70ff29610b0117d8853fac70; version=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <3928ae803dee044b01076c478c279c0bd54164cd; version=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <8eec545cde69e46e9a1d2b7d915ce4f5df85b3bd; version=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <93c7ee139721936b6fa717572e74d3994603ae13; version=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <c04d606f8b35ee7d3ed243f63893a607e9d6c0bc; version=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <cdda7d384c05485a232ae9a849f6445accb095bf; version=e2f471efe1d607a7aff38ce53ec717cebe4283d6 <d109e72f3fbccb540473285d17d7519584f7f76e

Published CVSS scores

4.7Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDCVSS: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

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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-416Use After Free
T1499Endpoint Denial of Service

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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