Set kernel.kptr_restrict=1 in the shipped sysctl drop-in - #9288
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fresh3nough wants to merge 1 commit into
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Set kernel.kptr_restrict=1 in the shipped sysctl drop-in#9288fresh3nough wants to merge 1 commit into
fresh3nough wants to merge 1 commit into
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Hide kernel pointer addresses from unprivileged /proc readers while leaving them visible to root. Low-risk hardening that does not change normal desktop behaviour; existing installs pick it up via migration without waiting for reboot. Fixes omacom#9194 Signed-off-by: fresh3nough <anonwurcod@proton.me>
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Summary
Fixes #9194.
Omarchy already ships performance/network sysctls in
etc/sysctl.d/99-omarchy-sysctl.conf. Arch defaults leavekernel.kptr_restrict=0, which exposes kernel addresses in/proc(e.g./proc/kallsyms) to unprivileged users and weakens KASLR against local exploits.Change
kernel.kptr_restrict=1inetc/sysctl.d/99-omarchy-sysctl.conf(root still sees pointers).1788139000.shapplies the drop-in at update time so existing boots do not wait for reboot.Test plan
kernel.kptr_restrict=1sudo sysctl -w kernel.kptr_restrict=1applies cleanly on GCP VM./test/shell.d/sysctl-kptr-restrict-test.shpasses