CVE-2023-20982: Potential OOB Read in btm_read_tx_power_complete() of Bluetooth

platform/packages/modules/Bluetooth Updated 02 Oct 2025

Summary

01/06/2023

Disclosed on

CVE-2023-20982

CVE

Yes i

Fix available

Moderate

Severity

Not published

CVSS Score

CVE-2023-20982: In btm_read_tx_power_complete of btm_acl.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 handles Bluetooth functionality. It allows devices to connect and communicate wirelessly using the Bluetooth protocol. This vulnerability affects the btm_read_tx_power_complete function in the btm_acl.cc file. The function is responsible for reading the transmit power level of a Bluetooth connection. The vulnerability arises from a missing bounds check, which can result in an out-of-bounds read. Exploiting this vulnerability could lead to local information disclosure in the Bluetooth server, requiring system execution privileges. No user interaction is necessary for exploitation.

Vulnerability Detail

The vulnerability exists in the btm_read_tx_power_complete function of the Bluetooth package. Due to a missing bounds check, an out-of-bounds read can occur. This can be exploited to disclose local information within the Bluetooth server. The vulnerability requires system execution privileges to be leveraged. The impact of this vulnerability is moderate, as it can potentially expose sensitive information. The vulnerability was introduced in version 13-next and was fixed in version 13-next on June 1, 2023.

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 Bluetooth package in the Android ecosystem is vulnerable to an out-of-bounds read in the btm_read_tx_power_complete function. Exploiting this vulnerability can result in local information disclosure within the Bluetooth server. It is recommended to update the Bluetooth package to version 13-next or later to mitigate this vulnerability.

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