CVE-2022-42543

Local information disclosure via libfdt bounds-check failure

Published Dec 16, 2022 · Updated Apr 17, 2025

Out-of-bounds read in Android kernel libfdt allows local users with System privileges to disclose memory through a crafted path. fdt_path_offset_namelen in fdt_ro.c applies an incorrect bounds check while resolving a supplied flattened-device-tree path and reads beyond the intended buffer. Exploitation requires System execution privileges and no user interaction; the documented consequence is local information disclosure only.

CVSS severity4.4
Medium
EPSS probability0.13%
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 read in Android kernel libfdt allows local users with System privileges to disclose memory through a crafted path. fdt_path_offset_namelen in fdt_ro.c applies an incorrect bounds check while resolving a supplied flattened-device-tree path and reads beyond the intended buffer. Exploitation requires System execution privileges and no user interaction; the documented consequence is local information disclosure only.

The record

CVE
CVE-2022-42543
Published
Dec 16, 2022
Updated
Apr 17, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-125
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record 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=Android kernel

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google Cloud · Androidversion=Android kernel

Published CVSS scores

4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

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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