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LIBYA CYBER ARMY
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System : Linux uta-edu.server.ly 4.18.0-513.11.1.el8_9.x86_64 #1 SMP Wed Jan 17 02:00:40 EST 2024 x86_64
User : utripoli ( 1001)
PHP Version : 7.4.33
Disable Function : NONE
Directory :  /usr/src/kernels/4.18.0-553.50.1.el8_10.x86_64/security/

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Current File : //usr/src/kernels/4.18.0-553.50.1.el8_10.x86_64/security/Kconfig.hardening
menu "Kernel hardening options"

config INIT_ON_ALLOC_DEFAULT_ON
	bool "Enable heap memory zeroing on allocation by default"
	help
	  This has the effect of setting "init_on_alloc=1" on the kernel
	  command line. This can be disabled with "init_on_alloc=0".
	  When "init_on_alloc" is enabled, all page allocator and slab
	  allocator memory will be zeroed when allocated, eliminating
	  many kinds of "uninitialized heap memory" flaws, especially
	  heap content exposures. The performance impact varies by
	  workload, but most cases see <1% impact. Some synthetic
	  workloads have measured as high as 7%.

config INIT_ON_FREE_DEFAULT_ON
	bool "Enable heap memory zeroing on free by default"
	help
	  This has the effect of setting "init_on_free=1" on the kernel
	  command line. This can be disabled with "init_on_free=0".
	  Similar to "init_on_alloc", when "init_on_free" is enabled,
	  all page allocator and slab allocator memory will be zeroed
	  when freed, eliminating many kinds of "uninitialized heap memory"
	  flaws, especially heap content exposures. The primary difference
	  with "init_on_free" is that data lifetime in memory is reduced,
	  as anything freed is wiped immediately, making live forensics or
	  cold boot memory attacks unable to recover freed memory contents.
	  The performance impact varies by workload, but is more expensive
	  than "init_on_alloc" due to the negative cache effects of
	  touching "cold" memory areas. Most cases see 3-5% impact. Some
	  synthetic workloads have measured as high as 8%.

endmenu

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