CVE-2023-21047

Local information disclosure via unchecked HAL metadata conversion

Published Mar 24, 2023 · Updated Feb 24, 2025

Out-of-bounds read in the Camera HAL on Google Pixel devices with the Android kernel allows local users to disclose information. ConvertToHalMetadata in aidl_utils.cc reads past a metadata buffer because it omits a bounds check when converting AIDL camera metadata. Exploitation requires System execution privileges and no user interaction, and exposure is limited to data readable beyond the buffer.

CVSS severity4.4
Medium
EPSS probability0.10%
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 the Camera HAL on Google Pixel devices with the Android kernel allows local users to disclose information. ConvertToHalMetadata in aidl_utils.cc reads past a metadata buffer because it omits a bounds check when converting AIDL camera metadata. Exploitation requires System execution privileges and no user interaction, and exposure is limited to data readable beyond the buffer.

The record

CVE
CVE-2023-21047
Published
Mar 24, 2023
Updated
Feb 24, 2025
Vendor
Google
Product
Google Pixel
Classifications
CWE-119, T1533
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 24, 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 · Google Pixelversion=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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1533Data from Local System

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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