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linux-hwe-6.8package is in 22.04 release. The 24.04 has 6.8 as base kernel, not as HWE./bin/suimmediately run a shell. It uses setuid to work, so disabling that in fstab or setting NoNewPrivileges will stop the PoC. The PoC didn't escape my Docker container. However, their GitHub said the underlying vulnerability is page cache corruption and running the PoC poisons /bin/su until up to reboot, so the exploit can be modified to target /usr/lib/systemd/systemd-executor, and wait for a systemd.timer to trigger, and this won't be patched by nosuid