Android Kernel < 4.8 - ptrace seccomp Filter Bypass Exploit

/ The seccomp.2 manpage http://man7.org/linux/man-pages/man2/seccomp.2.html documents: Before kernel 4.8, the seccomp check will not be run again after the tracer is notified. This means that, on older ker‐ nels, seccomp-based sandboxes must not allow use of ptrace2—even of other sandboxed...