validating memory ranges against heap object sizes in
support of CONFIG_HARDENED_USERCOPY.
-config HAVE_ARCH_HARDENED_USERCOPY
- bool
- help
- The architecture supports CONFIG_HARDENED_USERCOPY by
- calling check_object_size() just before performing the
- userspace copies in the low level implementation of
- copy_to_user() and copy_from_user().
-
config HARDENED_USERCOPY
bool "Harden memory copies between kernel and userspace"
- depends on HAVE_ARCH_HARDENED_USERCOPY
depends on HAVE_HARDENED_USERCOPY_ALLOCATOR
select BUG
help