CVE-2023-53834

Kernel crash via mismatched device-tree compatibility lookup

Published Dec 9, 2025 · Updated May 11, 2026

NULL pointer dereference in the Linux ina2xx ADC driver allows local users to crash affected kernels via a crafted device-tree node. The probe function trusts the first OF compatible string to populate an I2C device ID even when matching succeeds on a later string, then dereferences the resulting NULL id pointer. The crash requires a platform node whose first compatible value lacks both driver and legacy I2C entries while a later value, such as ti,ina231, matches the driver.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux ina2xx ADC driver allows local users to crash affected kernels via a crafted device-tree node. The probe function trusts the first OF compatible string to populate an I2C device ID even when matching succeeds on a later string, then dereferences the resulting NULL id pointer. The crash requires a platform node whose first compatible value lacks both driver and legacy I2C entries while a later value, such as ti,ina231, matches the driver.

The record

CVE
CVE-2023-53834
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=4.5
  2. Affected versionversion=c43a102e67db99c8bfe6e8a9280cec13ff53b789 <13f3ce53b65aa8b44cad7039d31e62c9ffd6c5d1
  3. Affected versionversion=c43a102e67db99c8bfe6e8a9280cec13ff53b789 <77b689cc27d489b75d33f1a368356d70eb0ce08c
  4. Affected versionversion=c43a102e67db99c8bfe6e8a9280cec13ff53b789 <a41e19cc0d6b6a445a4133170b90271e4a2553dc
  5. Affected versionversion=c43a102e67db99c8bfe6e8a9280cec13ff53b789 <a8e2ae6296d56478fb98ae7f739846ed121f154f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.5; version=c43a102e67db99c8bfe6e8a9280cec13ff53b789 <13f3ce53b65aa8b44cad7039d31e62c9ffd6c5d1; version=c43a102e67db99c8bfe6e8a9280cec13ff53b789 <77b689cc27d489b75d33f1a368356d70eb0ce08c; version=c43a102e67db99c8bfe6e8a9280cec13ff53b789 <a41e19cc0d6b6a445a4133170b90271e4a2553dc; version=c43a102e67db99c8bfe6e8a9280cec13ff53b789 <a8e2ae6296d56478fb98ae7f739846ed121f154f

Published CVSS scores

5.5SUSECVSS: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

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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