CVE-2023-53428

Kernel crash via recursive powercap zone parsing

Published Sep 18, 2025 · Updated Sep 18, 2025

Uncontrolled recursion in Linux 6.2 through 6.4.15 and 6.5 through 6.5.2 allows local users to crash the kernel. The ARM SCMI Powercap driver recursively walks platform-supplied zone trees during probing, so a particularly deep hierarchy exhausts the kernel stack. Reachability requires an ARM SCMI Powercap configuration that supplies such a hierarchy, and the bounded consequence is service interruption.

CVSS severity7.8
High
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

Uncontrolled recursion in Linux 6.2 through 6.4.15 and 6.5 through 6.5.2 allows local users to crash the kernel. The ARM SCMI Powercap driver recursively walks platform-supplied zone trees during probing, so a particularly deep hierarchy exhausts the kernel stack. Reachability requires an ARM SCMI Powercap configuration that supplies such a hierarchy, and the bounded consequence is service interruption.

The record

CVE
CVE-2023-53428
Published
Sep 18, 2025
Updated
Sep 18, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-674, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2025Record 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=6.2
  2. Affected versionversion=b55eef5226b71edf5422de246bc189da1fdc9000 <3e767d6850f867cc33ac16ca097350a1d2417982
  3. Affected versionversion=b55eef5226b71edf5422de246bc189da1fdc9000 <8022b64fb7daa6135d9f7b0e2f7b5b8e9e5179c9
  4. Affected versionversion=b55eef5226b71edf5422de246bc189da1fdc9000 <b427c23cebc5c926516f20304bf1acc05a33d147

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.2; version=b55eef5226b71edf5422de246bc189da1fdc9000 <3e767d6850f867cc33ac16ca097350a1d2417982; version=b55eef5226b71edf5422de246bc189da1fdc9000 <8022b64fb7daa6135d9f7b0e2f7b5b8e9e5179c9; version=b55eef5226b71edf5422de246bc189da1fdc9000 <b427c23cebc5c926516f20304bf1acc05a33d147

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8NVDCVSS: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 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-674Uncontrolled Recursion
T1499.004Application or System Exploitation

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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