CVE-2023-53242

Kernel panic via second sensor array write

Published Sep 15, 2025 · Updated Sep 15, 2025

Out-of-bounds write in the Linux hi3660 thermal driver from 4.20 allows local users to panic the kernel during device probing. The hi3660_thermal_probe function allocates space for one sensor-array entry but initializes a second entry beyond that allocation. Reachability requires the HiSilicon hi3660 thermal driver and matching device hardware; triggering the faulty probe interrupts the host through a fatal kernel exception.

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

Out-of-bounds write in the Linux hi3660 thermal driver from 4.20 allows local users to panic the kernel during device probing. The hi3660_thermal_probe function allocates space for one sensor-array entry but initializes a second entry beyond that allocation. Reachability requires the HiSilicon hi3660 thermal driver and matching device hardware; triggering the faulty probe interrupts the host through a fatal kernel exception.

The record

CVE
CVE-2023-53242
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=4.20
  2. Affected versionversion=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <15cc25829a97c3957e520e971868aacc84341317
  3. Affected versionversion=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <3cf2181e438f43ed24e12424fe36d156cca233b9
  4. Affected versionversion=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <68e675a9b69cfc34dd915d91a4650e3ee53421f4
  5. Affected versionversion=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <9f6756cd09889c7201ee31e6f76fbd914fb0b80d
  6. Affected versionversion=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <e02bc492883abf751fd1a8d89fc025fbce6744c6
  7. Affected versionversion=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <f5aaf140ab1c02889c088e1b1098adad600541af

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.20; version=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <15cc25829a97c3957e520e971868aacc84341317; version=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <3cf2181e438f43ed24e12424fe36d156cca233b9; version=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <68e675a9b69cfc34dd915d91a4650e3ee53421f4; version=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <9f6756cd09889c7201ee31e6f76fbd914fb0b80d; version=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <e02bc492883abf751fd1a8d89fc025fbce6744c6; version=7d3a2a2bbadb4bf5856ed394ba09b8fbb7a80460 <f5aaf140ab1c02889c088e1b1098adad600541af

Published CVSS scores

5.5NIST NVDCVSS: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.

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Technologies

Your stack

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Your stack

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