Preface: Security patches can be divided into 2 categories — HLOS (High Level Operating System) and NON-HLOS. The first category is for patches concerning the Android system itself and the Linux kernel, and the other is about code running at much lower levels.

Background: The software image running on the main processor is termed as HLOS. The Snapdragon 8 Gen 1 Chipset, that powered the new Samsung Galaxy S22 series, is one of the quickest and most energy-efficient processors available. Qualcomm is known for making some of the greatest chipsets for Android devices, and their current flagship SoC is the Snapdragon 8 Gen 1. Despite the fact that the chip was unveiled in November 2021, few devices have taken advantage of its capabilities. The MotorolaEdge X30, which was released in December 2021, was the first smartphone to include a Snapdragon 8 Gen 1 processor.

Vulnerability details: Memory corruption when invalid length is provided from HLOS for FRS/UDS request/response buffers.

Official announcement: Please refer to the link for details –

https://docs.qualcomm.com/bundle/publicresource/topics/80-41102-2/page_c_tafDiagUpdate.html