Ensure unprivileged eBPF is disabled

How it is checked

Audit method: Shell command

bad=0
chk() { f=/proc/sys/$(printf %s "$1" | tr . /); v=$(cat "$f" 2>/dev/null) || { echo "$1: not readable"; bad=1; return; }; [ "$v" = "$2" ] || { echo "$1 = $v (expected $2)"; bad=1; }; }
chk kernel.unprivileged_bpf_disabled 1
[ "$bad" -eq 0 ] && echo compliant

Expected output

compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Run the following command to set the active kernel parameter and persist the setting: # apiclient apply <<EOF [settings.kernel.sysctl] "kernel.unprivileged_bpf_disabled" = "1" EOF

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

tmaegis scan --target bottlerocket