Analyzing a Modern In-the-wild Android Exploit

This technical analysis describes an in-the-wild Samsung Android exploit chain (discovered Dec 2022 by Google TAG) that chained multiple kernel vulnerabilities—most notably CVE-2023-0266 (ALSA compatibility layer UAF) and CVE-2023-26083 (Mali tlstream pointer leak)—to produce reliable arbitrary kernel read/write. The attackers combined a Mali-based heap spray, pointer leaks to defeat KASLR, and forging of file_operations (via ashmem/configfs type confusion) to stabilize primitives and achieve kernel-level compromise, illustrating high sophistication and reliance on both 0-days and unbackported n-days in downstream device kernels.