Unauthenticated Access to PCI Configuration Space and BAR Resources in Linux Kernel

Unauthenticated Access to PCI Configuration Space and BAR Resources in Linux Kernel

CVE-2011-4347 · MEDIUM Severity

AV:L/AC:H/AU:N/C:N/I:N/A:C

The kvm_vm_ioctl_assign_device function in virt/kvm/assigned-dev.c in the KVM subsystem in the Linux kernel before 3.1.10 does not verify permission to access PCI configuration space and BAR resources, which allows host OS users to assign PCI devices and cause a denial of service (host OS crash) via a KVM_ASSIGN_PCI_DEVICE operation.

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