• Richard Guy Briggs's avatar
    audit: convert PPIDs to the inital PID namespace. · c92cdeb4
    Richard Guy Briggs authored
    sys_getppid() returns the parent pid of the current process in its own pid
    namespace.  Since audit filters are based in the init pid namespace, a process
    could avoid a filter or trigger an unintended one by being in an alternate pid
    namespace or log meaningless information.
    
    Switch to task_ppid_nr() for PPIDs to anchor all audit filters in the
    init_pid_ns.
    
    (informed by ebiederman's 6c621b7e)
    Cc: stable@vger.kernel.org
    Cc: Eric W. Biederman <ebiederm@xmission.com>
    Signed-off-by: default avatarRichard Guy Briggs <rgb@redhat.com>
    c92cdeb4
audit.c 50.4 KB