CVE-2023-21147

Local privilege escalation via I2C device use-after-free

Published Jun 28, 2023 · Updated Dec 3, 2024

Use-after-free in the Android kernel Pixel camera driver allows local users to escalate privileges without user interaction. The lwis_i2c_device_disable function in lwis_device_i2c.c can access an I2C device object after its lifetime ends because of an undisclosed logic error. Exploitation requires local low-privileged access to an affected Pixel device; no additional execution privileges or user interaction are required.

CVSS severity7.8
High
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

Use-after-free in the Android kernel Pixel camera driver allows local users to escalate privileges without user interaction. The lwis_i2c_device_disable function in lwis_device_i2c.c can access an I2C device object after its lifetime ends because of an undisclosed logic error. Exploitation requires local low-privileged access to an affected Pixel device; no additional execution privileges or user interaction are required.

The record

CVE
CVE-2023-21147
Published
Jun 28, 2023
Updated
Dec 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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