CVE-2023-20980: Potential OOB Read in btu_ble_ll_conn_param_upd_evt() of Bluetooth

platform/packages/modules/Bluetooth Updated 02 Oct 2025

Summary

01/06/2023

Disclosed on

CVE-2023-20980

CVE

Yes i

Fix available

Moderate

Severity

Not published

CVSS Score

CVE-2023-20980: In btu_ble_ll_conn_param_upd_evt of btu_hcif.cc, there is a possible out of bounds read due to a missing bounds check. Affects platform/packages/modules/Bluetooth across 2 version ranges.

>= 13:0, < 13:2023-06-01 >= 13-next:0, < 13-next:2023-06-01

Fixed in 13-next:2023-06-01. How to fix ↓

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Background

The Bluetooth package is a module in the Android ecosystem that provides functionality for Bluetooth communication. It allows devices to connect and exchange data wirelessly. This vulnerability affects the btu_ble_ll_conn_param_upd_evt function in the btu_hcif.cc file. The function is responsible for handling connection parameter update events in the Bluetooth server.

Vulnerability Detail

The vulnerability in btu_ble_ll_conn_param_upd_evt arises from a missing bounds check, leading to a potential out-of-bounds read. An attacker could exploit this issue to gain access to sensitive information stored in the Bluetooth server. However, successful exploitation requires system execution privileges, and user interaction is not necessary.

How To Fix

Minimum fixed version

13-next:2023-06-01

This is the first release that contains the fix.

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

The btu_ble_ll_conn_param_upd_evt function in the Bluetooth package is vulnerable to an out-of-bounds read due to a missing bounds check. This could potentially lead to the disclosure of sensitive information stored in the Bluetooth server. It is recommended to apply the provided fix to mitigate this vulnerability.

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