CVE-2024-32900

Local privilege escalation via fence use-after-free

Published Jun 13, 2024 · Updated Aug 19, 2024

Use-after-free in Android kernel LWIS allows local users to escalate privileges through a flaw in lwis_fence_signal. The function accesses a freed fence object because lwis_debug.c does not apply proper locking while signaling the fence. Exploitation requires code running under the hal_camera_default SELinux label, needs no additional execution privileges or user interaction, and grants higher local privileges.

CVSS severity7.8
High
EPSS probability0.17%
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 Android kernel LWIS allows local users to escalate privileges through a flaw in lwis_fence_signal. The function accesses a freed fence object because lwis_debug.c does not apply proper locking while signaling the fence. Exploitation requires code running under the hal_camera_default SELinux label, needs no additional execution privileges or user interaction, and grants higher local privileges.

The record

CVE
CVE-2024-32900
Published
Jun 13, 2024
Updated
Aug 19, 2024
Vendor
Google
Product
Android
Classifications
CWE-667, CWE-416, T1404
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <*
  2. Affected versionversion=Android kernel

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google · Androidversion=0 <*; version=Android kernel

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

CWE-667Improper Locking
CWE-416Use After Free
T1404Exploitation 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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