Linux kernel bug fix: mm: Add a user_ns owner to mm_struct and fix ptrace permission checks
Subsystem: kernel (kernel/ptrace.c)
Bug type: crash, severity: security
Files changed: include/linux/mm_types.h;kernel/fork.c;kernel/ptrace.c;mm/init-mm.c
Introduced by Serge E. Hallyn on 2011-03-23 19:47:05 -0700; fixed by Eric W. Biederman on 2016-11-22 11:49:48 -0600 (lifetime: 2070 days)