CVE-2026-8631: fix integer overflow in the hpcups processing path that
could lead to privilege escalation / arbitrary code execution via crafted
print data (backport of upstream HPLIP 3.26.4)
CVE-2026-8632: fix OS command injection in Is_Process_Running() by replacing
the ps/grep shell pipeline with a safe /proc-based scan (backport of
upstream HPLIP 3.26.4)