Android 8.0 has released, born with new kernel harden features(PAN and KASLR, etc.) and more strict SELinux policies enforcing. Rooting large numbers of newest Android devices with one single vulnerability is quite a challenge. We will detail how the shared memory can be used to pad the memory and bypass ASLR, how to escape the SECCOMP sandbox of mediacodec, and control one thread of mediaserver with almost 100% success rate.”]