- Drop AlmaLinux ahead-of-RHEL rtmutex remove_waiter() fixes (1756, 1757),
superseded by RHEL's CVE-2026-43499 copies in 687.25.1
- Add RHEL 687.25.1 backports recreated from CS9/upstream (1761-1769),
including the futex/requeue guard and its same-release revert (net zero,
kept for changelog fidelity)
