CVE-2026-23081

Service interruption via OF node reference leak

Published Feb 4, 2026 · Updated Feb 4, 2026

Resource leakage in Linux Kernel 6.13 through 6.18.7 and 6.19-rc1 through 6.19-rc6 allows local users to interrupt service. In xway_gphy_config_init, of_get_child_by_name increments the leds device-tree node reference, but the original code discards it without calling of_node_put. A local low-privilege account and an active intel-xway PHY configuration limit reachability; the established consequence is service interruption.

CVSS severity5.5
Medium
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

Resource leakage in Linux Kernel 6.13 through 6.18.7 and 6.19-rc1 through 6.19-rc6 allows local users to interrupt service. In xway_gphy_config_init, of_get_child_by_name increments the leds device-tree node reference, but the original code discards it without calling of_node_put. A local low-privilege account and an active intel-xway PHY configuration limit reachability; the established consequence is service interruption.

The record

CVE
CVE-2026-23081
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 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=1758af47b98c17da464cb45f476875150955dd48 <1f24dfd556401b75f78e8d9cbd94dd9f31411c3a
  2. Affected versionversion=1758af47b98c17da464cb45f476875150955dd48 <79912b256e14054e6ba177d7e7e631485ce23dbe
  3. Affected versionversion=6.13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1758af47b98c17da464cb45f476875150955dd48 <1f24dfd556401b75f78e8d9cbd94dd9f31411c3a; version=1758af47b98c17da464cb45f476875150955dd48 <79912b256e14054e6ba177d7e7e631485ce23dbe; version=6.13

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS:3.1/AV:L/AC:L/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

T1499.001OS Exhaustion Flood

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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