In tracepoint_msg_handler of cpm/google/lib/tracepoint/tracepoint_ipc.c, there is a possible memory overwrite due to improper input validat…

In tracepoint_msg_handler of cpm/google/lib/tracepoint/tracepoint_ipc.c, there is a possible memory overwrite due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.