CVE-2023-35681: Bluetooth GATT gatts_process_* functions OOB write

platform/packages/modules/Bluetooth Updated 02 Oct 2025

Summary

01/09/2023

Disclosed on

CVE-2023-35681

CVE

Yes i

Fix available

Critical

Severity

Not published

CVSS Score

CVE-2023-35681: In eatt_l2cap_reconfig_completed of eatt_impl.h, there is a possible out of bounds write due to an integer overflow. Affects platform/packages/modules/Bluetooth across 2 version ranges.

>= 13:0, < 13:2023-09-01 >= 13-next:0, < 13-next:2023-09-01

Fixed in 13-next:2023-09-01. How to fix ↓

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Background

The Bluetooth package in the Android ecosystem is responsible for providing Bluetooth functionality to Android devices. It includes modules and libraries that handle various aspects of Bluetooth communication, such as pairing, connecting, and data transfer. The vulnerability described in this report affects the GATT (Generic Attribute Profile) functionality of the Bluetooth package.

Vulnerability Detail

The vulnerability arises in the gatts_process_* functions of the GATT implementation. Due to an integer overflow, an out-of-bounds write can occur in the eatt_l2cap_reconfig_completed function of eatt_impl.h. This vulnerability can be exploited remotely and may lead to remote code execution without requiring any additional execution privileges. The exploitation does not require user interaction.

How To Fix

Minimum fixed version

13-next:2023-09-01

This is the first release that contains the fix.

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Workaround

There is no known workaround for this vulnerability.

Conclusion

The Bluetooth GATT gatts_process_* functions OOB write vulnerability in the Android Bluetooth package can lead to remote code execution without requiring additional privileges or user interaction. It is crucial to update the Bluetooth package to version 13.2023-09-01 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for platform/packages/modules/Bluetooth →