Windows 11 Kernel (Direct Memory Access) DMA Protection must be enabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-253426 | WN11-EP-000310 | SV-253426r991580_rule | CCI-000172 | medium |
| Description | ||||
| Kernel DMA Protection to protect PCs against drive-by Direct Memory Access (DMA) attacks using PCI hot plug devices connected to Thunderbolt 3 ports. Drive-by DMA attacks can lead to disclosure of sensitive information residing on a PC, or even injection of malware that allows attackers to bypass the lock screen or control PCs remotely. | ||||
| STIG | Date | |||
| Microsoft Windows 11 Security Technical Implementation Guide | 2025-05-15 | |||
Details
Check Text (C-253426r991580_chk)
If the following registry value does not exist or is not configured as specified, this is a finding:
Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \Software\Policies\Microsoft\Windows\Kernel DMA Protection
Value Name: DeviceEnumerationPolicy
Value Type: REG_DWORD
Value: 0
Fix Text (F-56829r829361_fix)
Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Kernel DMA Protection >> "Enumeration policy for external devices incompatible with Kernel DMA Protection" to "Enabled" with "Enumeration Policy" set to "Block All".