AndroidOperating system · Google

CVE-2025-36929

MEDIUM · 5.5 CVSS v3.1 Published 2025-12-11
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
57/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In AreFencesRegistered of gxp_fence_manager.cc, there is a possible information leak due to improper input validation. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

In the AreFencesRegistered function within gxp_fence_manager.cc, improper input validation allows a local attacker to potentially read sensitive information without requiring any elevated privileges or user interaction. The vulnerability stems from insufficient validation of input parameters passed to this function, which could leak memory contents or other sensitive data to a local user.

MitigationImplement proper input validation and bounds checking in the AreFencesRegistered function to ensure all inputs are validated before processing. Consider adding length checks and sanitizing any pointers or array indices used within the function.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
AndroidOperating system
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the vulnerable fence manager component
    Check if the device contains the gxp_fence_manager component by searching for files or binaries with 'gxp_fence_manager' in the name or checking /system/lib64 or /vendor/lib64 directories for related libraries.
    Affected if The gxp_fence_manager component or related library exists on the device.
  2. Check for fence-related system services
    Examine if the fence registration service is exposed by checking for relevant system services via 'dumpsys' commands, particularly looking for fence manager or synchronization fence-related services.
    Affected if A fence management service is running and accessible on the device.
  3. Verify input handling in fence operations
    Monitor or inspect logs (logcat) for any fence registration calls and check whether the AreFencesRegistered function accepts unvalidated input parameters by observing behavior or reviewing any accessible debug information.
    Affected if The AreFencesRegistered function can be invoked with arbitrary or unvalidated parameters.
  4. Confirm lack of elevated privilege requirement
    Verify that the vulnerable code path does not require root or system-level privileges by testing fence information retrieval as a standard unprivileged application or examining the permission model around fence operations.
    Affected if The fence information can be accessed without elevated (root/system) privileges.

The user is affected if the gxp_fence_manager component exists on their Android device and the AreFencesRegistered function can be accessed without elevated privileges, allowing potential memory contents or sensitive data to be read through improper input validation.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper input validation and bounds checking in the AreFencesRegistered function to ensure all inputs are validated before processing. Consider adding length checks and sanitizing any pointers or array indices used within the function.

Fix this in Android Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,040
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Scan for this in your stack

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dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-36929 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data