9to5Linux Weekly Roundup for August 23rd, 2026, brings news about Mozilla Firefox 154, PorteuX 2.8, Garuda Linux “Temeraire”, GNU Linux-libre 7.2 kernel, RPM 6.1, Mozilla Thunderbird 154, VirtualBox 7.2.16, COSMIC 1.6, Proton 11.0-2, NetworkManager 1.58.1, KDE Gear 26.08, and more.