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Merge remote-tracking branch 'origin/master'

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Patrick Schleizer 2020-03-11 09:08:41 -04:00
commit e6e7886a6e
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2 changed files with 4 additions and 5 deletions
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5
etc/initramfs-tools/scripts/init-bottom/sysctl-initramfs
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@ -15,7 +15,8 @@ prereqs)
;;
esac
sysctl -p ${rootmnt}/etc/sysctl.conf >/dev/null
sysctl -p ${rootmnt}/etc/sysctl.d/*.conf >/dev/null
sysctl -p ${rootmnt}/etc/sysctl.conf >/dev/null 2>${rootmnt}/var/log/sysctl-initramfs-error.log
sysctl -p ${rootmnt}/etc/sysctl.d/*.conf >/dev/null 2>>${rootmnt}/var/log/sysctl-initramfs-error.log
grep -v "unprivileged_userfaultfd" /var/log/sysctl-initramfs-error.log
true

4
etc/sysctl.d/30_security-misc.conf
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@ -134,10 +134,8 @@ kernel.sysrq=132
## https://lkml.org/lkml/2019/4/15/890
dev.tty.ldisc_autoload=0
## Disable for now.
## https://forums.whonix.org/t/kernel-hardening/7296/406
## Restrict the userfaultfd() syscall to root as it can make heap sprays
## easier.
##
## https://duasynt.com/blog/linux-kernel-heap-spray
#vm.unprivileged_userfaultfd=0
vm.unprivileged_userfaultfd=0