Null deference pointer in dovecot-2.2.18

[吴迪]

Dear,


     use our static analysis tools, I find some bugs (Null deference pointer) for dovecot-2.2.18. Null deference pointer bugs often make program crashes,  Please confim them, Thanks!  


      1. dovecot-2.2.18/src/config/config-request.c   332


      'setting_export_section_name(ctx->prefix, def, children[i], i);',  pointer 'children' in line 202  assigned  NULL and if  branch 'case SET_DEFLIST_UNIQUE'  not execute, so pointer 'children' is always NULL.   It load to a bug of null deference pointer In line 332.


      The  same bugs also appeared in :


      1. dovecot-2.2.18/src/lib-index/mail-index-fsck.c   line 170 or 174, pointer 'kw_rec ' mybe NULL.


       2.dovecot-2.2.18/src/lib-storage/mail-search-args-simplify line 349, pointer 'prev_arg' mybe NULL.






best wishes~


Amy