CyberRota Analysis
AI-GeneratedThe vulnerability affects the Alpha architecture of the Linux kernel, specifically the pci_mmap_resource() function, which currently lacks a security check to prevent userspace from mapping PCI Base Address Registers (BARs) when the kernel is locked down. This oversight could allow unauthorized direct memory access, potentially leading to DMA attacks. Organizations using the Alpha architecture in their Linux environments should prioritize addressing this vulnerability to enhance their security posture against potential exploitation.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: alpha/PCI: Add security_locked_down() check to pci_mmap_resource() Currently, Alpha's pci_mmap_resource() does not check security_locked_down(LOCKDOWN_PCI_ACCESS) before allowing userspace to mmap PCI BARs. The generic version has had this check since commit eb627e17727e ("PCI: Lock down BAR access when the kernel is locked down") to prevent DMA attacks when the kernel is locked down. Add the same check to Alpha's pci_mmap_resource().