| commit | f6f91b0d9fd971c630cef908dde8fe8795aefbf8 | |
| author | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Tue, 23 Jul 2013 17:37:00 +0000 (23 18:37 +0100) | ||
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Wed, 31 Jul 2013 21:01:48 +0000 (31 22:01 +0100) | ||
| tree | 54032cefa513a3ae63971998caa90eea4736180c | treesnapshot (tar.gz zip) |
| parent | e39e3f3ebfef03450cf7bfa7a974a8c61f7980c8 | commitdiff |
ARM: allow kuser helpers to be removed from the vector page
Provide a kernel configuration option to allow the kernel user helpers
to be removed from the vector page, thereby preventing their use with
ROP (return orientated programming) attacks. This option is only
visible for CPU architectures which natively support all the operations
which kernel user helpers would normally provide, and must be enabled
with caution.
Cc: <stable@vger.kernel.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Provide a kernel configuration option to allow the kernel user helpers
to be removed from the vector page, thereby preventing their use with
ROP (return orientated programming) attacks. This option is only
visible for CPU architectures which natively support all the operations
which kernel user helpers would normally provide, and must be enabled
with caution.
Cc: <stable@vger.kernel.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| arch/arm/kernel/entry-armv.S | diffblobblamehistory | |
| arch/arm/kernel/traps.c | diffblobblamehistory | |
| arch/arm/mm/Kconfig | diffblobblamehistory |