CVE-2023-20977: Potential OOB Read in btm_ble_gap.cc

platform/packages/modules/Bluetooth Updated 02 Oct 2025

Summary

01/06/2023

Disclosed on

CVE-2023-20977

CVE

Yes i

Fix available

Moderate

Severity

Not published

CVSS Score

CVE-2023-20977: In btm_ble_read_remote_features_complete of btm_ble_gap.cc, there is a possible out of bounds read due to improper input validation. 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 in the Android ecosystem is responsible for managing Bluetooth functionality on Android devices. It provides APIs and protocols for Bluetooth communication between devices. This vulnerability affects the Bluetooth package in Android versions 13-next. The package is susceptible to an out-of-bounds read vulnerability in the btm_ble_gap.cc file, specifically in the btm_ble_read_remote_features_complete function. This vulnerability could potentially allow local information disclosure if the firmware is compromised with system execution privileges. Exploitation does not require user interaction.

Vulnerability Detail

The vulnerability arises due to improper input validation in the btm_ble_read_remote_features_complete function of the btm_ble_gap.cc file. This can lead to an out-of-bounds read, which may result in the disclosure of local information. The impact of this vulnerability is contingent upon the compromise of the firmware with system execution privileges. If successfully exploited, an attacker could gain access to sensitive information without requiring user interaction.

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 known workaround for this vulnerability. It is recommended to apply the fix as soon as possible.

Conclusion

The Bluetooth package in Android versions 13-next is vulnerable to an out-of-bounds read in the btm_ble_gap.cc file. This vulnerability can lead to local information disclosure if the firmware is compromised with system execution privileges. It is crucial to update the Bluetooth package to the fixed version to mitigate the risk of exploitation.

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