Overview
- Players on affected Asus, Gigabyte, MSI, and ASRock boards are seeing VAN:Restriction notices and cannot launch Valorant until updated firmware is installed.
- Riot says some firmwares reported Pre‑Boot DMA Protection as active even though the IOMMU was not fully initializing during early boot.
- Motherboard makers have published advisories and BIOS updates, with CVE-2025-11901 (Asus), CVE-2025-14302 (Gigabyte), CVE-2025-14303 (MSI), and CVE-2025-14304 (ASRock).
- The vulnerability enables local PCIe DMA hardware to read or write system RAM before the OS loads, allowing hardware cheats to evade detection.
- Riot advises updating to the latest BIOS and enabling IOMMU DMA Protection (Enable with Full Protection), alongside verifying Secure Boot and VBS and avoiding untrusted PCIe devices until patched.