CVE-2026-45868

Local denial of service via device-node leak

Published May 27, 2026 · Updated May 27, 2026

Resource leak in the pinctrl-single driver in affected Linux Kernel versions allows local users to interrupt service through GPIO setup. pcs_add_gpio_func() retains each device-node reference returned in gpiospec.np by of_parse_phandle_with_args() instead of releasing it with of_node_put(), including on allocation failure. Exploitation requires low-privileged local access and use of the affected GPIO-function path; repeated triggering exhausts kernel resources without exposing or modifying data.

CVSS severity5.5
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the pinctrl-single driver in affected Linux Kernel versions allows local users to interrupt service through GPIO setup. pcs_add_gpio_func() retains each device-node reference returned in gpiospec.np by of_parse_phandle_with_args() instead of releasing it with of_node_put(), including on allocation failure. Exploitation requires low-privileged local access and use of the affected GPIO-function path; repeated triggering exhausts kernel resources without exposing or modifying data.

The record

CVE
CVE-2026-45868
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=3.10
  2. Affected versionversion=a1a277eb76b3507df7c41774048a644aa4dfd096 <191bfd5710d6a7f48ba4315d8d3e908dcc15243c
  3. Affected versionversion=a1a277eb76b3507df7c41774048a644aa4dfd096 <353353309b0f7afa407df29e455f9d15b5acc296
  4. Affected versionversion=a1a277eb76b3507df7c41774048a644aa4dfd096 <3e3b28bb0b6ddc521a4fdd1c1ba0d35017a0796b
  5. Affected versionversion=a1a277eb76b3507df7c41774048a644aa4dfd096 <456a60d06c09a92680dc35fabca68024badcc28e
  6. Affected versionversion=a1a277eb76b3507df7c41774048a644aa4dfd096 <5b9e84d27e310f22c4ba45fedbc4f5baf43dd823
  7. Affected versionversion=a1a277eb76b3507df7c41774048a644aa4dfd096 <7814b1431848854b56717086e2b61bea3c59753d
  8. Affected versionversion=a1a277eb76b3507df7c41774048a644aa4dfd096 <99cc7352156c65201c675f750e0e77c4c73d93f5
  9. Affected versionversion=a1a277eb76b3507df7c41774048a644aa4dfd096 <e2e367e56bacb93ce5ac73f0b3297d5c83d38dd4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.10; version=a1a277eb76b3507df7c41774048a644aa4dfd096 <191bfd5710d6a7f48ba4315d8d3e908dcc15243c; version=a1a277eb76b3507df7c41774048a644aa4dfd096 <353353309b0f7afa407df29e455f9d15b5acc296; version=a1a277eb76b3507df7c41774048a644aa4dfd096 <3e3b28bb0b6ddc521a4fdd1c1ba0d35017a0796b; version=a1a277eb76b3507df7c41774048a644aa4dfd096 <456a60d06c09a92680dc35fabca68024badcc28e; version=a1a277eb76b3507df7c41774048a644aa4dfd096 <5b9e84d27e310f22c4ba45fedbc4f5baf43dd823; version=a1a277eb76b3507df7c41774048a644aa4dfd096 <7814b1431848854b56717086e2b61bea3c59753d; version=a1a277eb76b3507df7c41774048a644aa4dfd096 <99cc7352156c65201c675f750e0e77c4c73d93f5; version=a1a277eb76b3507df7c41774048a644aa4dfd096 <e2e367e56bacb93ce5ac73f0b3297d5c83d38dd4

Published CVSS scores

5.5Oracle LinuxCVSS: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

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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