The qdisk PV disk backend in qemu-xen in Xen 4.2.x and 4.3.x before 4.3.1, and qemu 1.1 and other versions, allows local HVM guests to cause a denial of service (domain grant reference consumption) via unspecified vectors.
| Product | Vendor | Version |
|---|---|---|
| n/a | n/a | < 21.1R2-S1, 21.1R3 |