CVE-2026-23079

Local service interruption via GPIO resource leaks

Published Feb 4, 2026 · Updated Feb 4, 2026

Resource leaks in the Linux Kernel GPIO character-device interface 6.18 allow local users to exhaust kernel memory through error paths. lineinfo_changed_notify() returns after notification callback failures without releasing resources allocated for the notification. Local low-privilege access is required; repeated failures consume kernel memory and can interrupt service.

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 leaks in the Linux Kernel GPIO character-device interface 6.18 allow local users to exhaust kernel memory through error paths. lineinfo_changed_notify() returns after notification callback failures without releasing resources allocated for the notification. Local low-privilege access is required; repeated failures consume kernel memory and can interrupt service.

The record

CVE
CVE-2026-23079
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499
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=6.18
  2. Affected versionversion=d4cd0902c156b2ca60fdda8cd8b5bcb4b0e9ed64 <16414341b0dd58b650b5df45c79115bc5977bb76
  3. Affected versionversion=d4cd0902c156b2ca60fdda8cd8b5bcb4b0e9ed64 <70b3c280533167749a8f740acaa8ef720f78f984
  4. Affected versionversion=dccc6daa8afa0f64c432e4c867f275747e3415e1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.18; version=d4cd0902c156b2ca60fdda8cd8b5bcb4b0e9ed64 <16414341b0dd58b650b5df45c79115bc5977bb76; version=d4cd0902c156b2ca60fdda8cd8b5bcb4b0e9ed64 <70b3c280533167749a8f740acaa8ef720f78f984; version=dccc6daa8afa0f64c432e4c867f275747e3415e1

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
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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