MFS12 r341490, r341493:

MFS12 r341490, r341493:

 r341490 (markj):
  MFC r341442, r341443:
  Plug memory disclosures via ptrace(2).

 r341493 (garga):
  MFC r341464:
  Restore /var/crash permissions to 0750, as declared in mtree file.
  After r337337 it changed to 0755.

As this would have otherwise been resolved as a post-release EN/SA
from so@, this does not warrant adding RC4 to the 12.0 schedule.

Approved by:	re (implicit), so
Sponsored by:	The FreeBSD Foundation