X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=security%2FKconfig;h=559293922a479eabf188b70e963d5264f9032799;hb=f0c929251e01a7a86b6254c775cb6b65c6457f10;hp=389e151e3b68e832d7b63b9623e10098d6d2e03b;hpb=f71ea9ddf0ff110f3fcbb89a46686bfba264014c;p=safe%2Fjmp%2Flinux-2.6 diff --git a/security/Kconfig b/security/Kconfig index 389e151..5592939 100644 --- a/security/Kconfig +++ b/security/Kconfig @@ -73,17 +73,8 @@ config SECURITY_NETWORK_XFRM IPSec. If you are unsure how to answer this question, answer N. -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. - config SECURITY_FILE_CAPABILITIES - bool "File POSIX Capabilities (EXPERIMENTAL)" - depends on (SECURITY=n || SECURITY_CAPABILITIES!=n) && EXPERIMENTAL + bool "File POSIX Capabilities" default n help This enables filesystem capabilities, allowing you to give @@ -104,7 +95,28 @@ config SECURITY_ROOTPLUG 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