Preface: Primitive types such as `int`, `double`, `char`, and `boolean` are stored directly in stack memory. Each time you declare a primitive variable, the JVM allocates a specific size of memory for it. Background: Returns the available average/minimum GPU headroom in percentage for last ‘duration’ seconds. The get_gpu_headroom() API is used by applications to get…

Preface: What is a buffer over-read? The opposite of a buffer overflow is a buffer overread. In this case, the program requests data from outside the buffer. Because data read from outside the buffer is irrelevant to the program, it may cause the program to crash or behave unexpectedly. Background: Qualcomm SoC chips are divided…

Preface: The Qualcomm Hypervisor provides a modern virtualization framework that allows multiple operating systems to run independently and concurrently, delivering high performance. The Qualcomm Type 1 Hypervisor facilitates the hosting of multiple trusted execution environments for secure use cases. Background: On some Qualcomm platforms, the hypervisor emulates more than 128 SMR (Stream Matching Register) groups.…

Preface: Preface: Imagination Technologies Group Limited is a British semiconductor and software design company owned by Canyon Bridge Capital Partners, a private equity fund based in Beijing that is ultimately owned by the Chinese government. With its global headquarters in Kings Langley, England, its primary business is in the design of PowerVR mobile graphics processors…

Preface: A zero-day exploit targeting a use-after-free (UAF) vulnerability in the Linux Kernel. Staying Alert! Slab–use–after–free vulnerabilities occur when memory that’s been previously freed is accessed again, often leading to unpredictable behavior or system crashes. KernelAddressSANitizer (KASAN) is a dynamic memory error detector designed to find out-of-bound and use–after–free bugs. Background: The Controller Area Network…