CVE-2023-21166: Unknown Package - Arbitrary Code Execution Due to Use After Free in RGXBackingZSBuffer

:unknown: Updated 02 Oct 2025

Summary

01/12/2023
Yes i
High
Not published

CVE-2023-21166: In RGXBackingZSBuffer of rgxta3d.c, there is a possible arbitrary code execution due to a use after free. Affects :unknown: versions >= SoCVersion:0, < SoCVersion:2023-12-05. Fixed in SoCVersion:2023-12-05. How to fix ↓

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Background

The vulnerability affects an unknown package within the Android ecosystem, specifically in the RGXBackingZSBuffer component of the rgxta3d.c file. This package is integral to the graphics processing capabilities of Android devices, handling rendering tasks and memory management for graphical data. Its functionality is crucial for performance and stability in applications that rely on 3D graphics. However, this vulnerability exposes the system to potential security risks, particularly due to its nature of allowing arbitrary code execution.

Vulnerability Detail

In RGXBackingZSBuffer of rgxta3d.c, there is a possible arbitrary code execution due to a use after free vulnerability. This occurs when a program continues to use a pointer after the memory it points to has been freed, leading to unpredictable behavior. The ramifications of this vulnerability include local escalation of privilege in the kernel, which means that an attacker could gain higher access rights without needing additional execution privileges. User interaction is not required for exploitation, making it particularly dangerous.

How To Fix

Minimum fixed version

SoCVersion:2023-12-05

This is the first release that contains the fix.

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Workaround

Currently, there are no specific workarounds provided for this vulnerability. The best course of action is to apply the patch as soon as it becomes available.

Conclusion

CVE-2023-21166 presents a significant security risk due to its potential for arbitrary code execution and local privilege escalation. Users are strongly advised to update their systems to the patched version to protect against this vulnerability. Regular monitoring and updates are essential to maintain security in the Android ecosystem.

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FAQ

CVE-2023-21166 is a vulnerability in the RGXBackingZSBuffer component of the rgxta3d.c file, which allows for arbitrary code execution due to a use after free issue.

An attacker can exploit this vulnerability to execute arbitrary code with elevated privileges in the kernel, without needing additional execution rights.

No, user interaction is not needed for exploitation, making this vulnerability particularly concerning.

If your system is affected, you should update to the patched version available as of SoCVersion: 2023-12-05 to mitigate the risk.

You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.

Related vulnerabilities

Recent vulnerabilities recorded for :unknown:.

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How To Fix

Minimum fixed version

SoCVersion:2023-12-05

This is the first release that contains the fix.

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

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