Preface: Google has been transitioning HALs from HIDL to AIDL since Android 11, and by Android 13 and 14, most major HALs—including Wi-Fi (WLAN), Audio, Bluetooth, and Telephony—have adopted AIDL as the standard interface definition language.

Background: In Android, defining and managing buffers in the WAN HAL (Wide Area Network Hardware Abstraction Layer) isn’t a standard or commonly documented component like the Camera HAL or Audio HAL. However, if you’re referring to buffer management in a HAL module (such as for networking or other hardware interfaces), the general approach follows Android’s HAL architecture principles.

The WLAN HAL (Hardware Abstraction Layer) allows the Android operating system to interact with Wi-Fi hardware by providing a standardized, hardware-independent interface. This interface, specified by HIDL (Hardware Interface Definition Language) in Android 8.0 and above, enables the Android framework to control Wi-Fi functionalities like scanning, connecting, and sending/receiving data, regardless of the specific Wi-Fi chipset used by the device.

Vulnerability details: Transient DOS while processing the tone measurement response buffer when the response buffer is out of range.

Official Announcement: Please see the link for details –

https://docs.qualcomm.com/product/publicresources/securitybulletin/june-2025-bulletin.html