From 6dfa60daaa0966a8e414ab0a7fd002a99001920a Mon Sep 17 00:00:00 2001 From: Electron752 Date: Sat, 14 Jan 2017 02:54:26 -0800 Subject: [PATCH] ARM64: Enable Kernel Address Space Randomization (#1792) Randomization allows the mapping between virtual addresses and physical address to be different on each boot. This makes it more difficult to exploit security vulnerabilities that require knowledge of fixed hardware addresses. The firmware generates a 8 byte random number during bootup and stores it in the device tree under chosen/kaslr-seed. This number is used to randomize the address mapping. This change enables this feature in the build configuration for ARM64. Signed-off-by: Michael Zoran --- arch/arm64/configs/bcmrpi3_defconfig | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm64/configs/bcmrpi3_defconfig +++ b/arch/arm64/configs/bcmrpi3_defconfig @@ -53,6 +53,7 @@ CONFIG_ARMV8_DEPRECATED=y CONFIG_SWP_EMULATION=y CONFIG_CP15_BARRIER_EMULATION=y CONFIG_SETEND_EMULATION=y +CONFIG_RANDOMIZE_BASE=y CONFIG_CMDLINE="console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait" CONFIG_BINFMT_MISC=y CONFIG_COMPAT=y