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disable kexec (revert enabling kexec)

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remove kexec-utils for ram-wipe since moved to its own package
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Patrick Schleizer 2023-01-09 06:37:45 -05:00
parent 87c4e77c01
commit ad5d0d4b12
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2 changed files with 2 additions and 3 deletions
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etc/sysctl.d/30_security-misc.conf
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@ -37,8 +37,7 @@ net.core.bpf_jit_harden=2
## A toggle indicating if the kexec_load syscall has been disabled. This value defaults to 0 (false: kexec_load enabled), but can be set to 1 (true: kexec_load disabled). Once true, kexec can no longer be used, and the toggle cannot be set back to false. This allows a kexec image to be loaded before disabling the syscall, allowing a system to set up (and later use) an image without it being altered. Generally used together with the "modules_disabled" sysctl.
## Disables kexec which can be used to replace the running kernel.
## kexec is required for cold boot attack defense
## kernel.kexec_load_disabled=1
kernel.kexec_load_disabled=1
## Hides kernel addresses in various files in /proc.
## Kernel addresses can be very useful in certain exploits.