The xenlight library (libxl) in Xen 4.0.x through 4.2.x, when IOMMU is disabled, provides access to a busmastering-capable PCI passthrough device before the IOMMU setup is complete, which allows local HVM guest domains to gain privileges or cause a denial of service via a DMA instruction.
2013-09-12T18:37:43.303
2025-04-11T00:51:21.963
Deferred
CVSSv2: 6.5 (MEDIUM)
AV:A/AC:H/Au:S/C:C/I:C/A:C
2.5
10.0
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | xen | xen | 4.0.0 | Yes |
| Operating System | xen | xen | 4.0.1 | Yes |
| Operating System | xen | xen | 4.0.2 | Yes |
| Operating System | xen | xen | 4.0.3 | Yes |
| Operating System | xen | xen | 4.0.4 | Yes |
| Operating System | xen | xen | 4.1.0 | Yes |
| Operating System | xen | xen | 4.1.1 | Yes |
| Operating System | xen | xen | 4.1.2 | Yes |
| Operating System | xen | xen | 4.1.3 | Yes |
| Operating System | xen | xen | 4.1.4 | Yes |
| Operating System | xen | xen | 4.1.5 | Yes |
| Operating System | xen | xen | 4.2.0 | Yes |
| Operating System | xen | xen | 4.2.1 | Yes |
| Operating System | xen | xen | 4.2.2 | Yes |
| Operating System | xen | xen | 4.2.3 | Yes |