config SECURITY_CAPABILITIES
bool "Default Linux Capabilities"
depends on SECURITY
+ default y
help
This enables the "default" Linux capabilities functionality.
If you are unsure how to answer this question, answer Y.
If you are unsure how to answer this question, answer N.
+config SECURITY_DEFAULT_MMAP_MIN_ADDR
+ int "Low address space to protect from user allocation"
+ depends on SECURITY
+ default 0
+ help
+ This is the portion of low virtual memory which should be protected
+ from userspace allocation. Keeping a user from writing to low pages
+ can help reduce the impact of kernel NULL pointer bugs.
+
+ For most ia64, ppc64 and x86 users with lots of address space
+ a value of 65536 is reasonable and should cause no problems.
+ On arm and other archs it should not be higher than 32768.
+ Programs which use vm86 functionality would either need additional
+ permissions from either the LSM or the capabilities module or have
+ this protection disabled.
+
+ This value can be changed after boot using the
+ /proc/sys/vm/mmap_min_addr tunable.
+
+
source security/selinux/Kconfig
+source security/smack/Kconfig
endmenu