Critical motherboard flaw allows game cheats, Riot Games blocks 'Valorant' players that don't update BIOS — security patches pushed live by all major motherboard vendors

Riot Games identified a critical security flaw in certain motherboards from major vendors like Asus, Gigabyte, MSI, and ASRock that could enable cheating in games like Valorant. The vulnerability involves the IOMMU not fully initializing, potentially allowing DMA devices to manipulate system RAM and bypass anti-cheat measures. Riot Games collaborated with motherboard manufacturers to release BIOS updates addressing the issue to prevent unfair advantages in esports competitions. Players are urged to update their BIOS to the latest version to ensure security features are active and to avoid restrictions on launching Valorant.