PCI devices can make use of a functionality called phantom functions, that when enabled allows the device to generate requests using the IDs of functions that are otherwise unpopulated. This allows a device to extend the number of outstanding requests.
Such phantom functions need an IOMMU context setup, but failure to setup the context is not fatal when the device is assigned. Not failing device assignment when such failure happens can lead to the primary device being assigned to a guest, while some of the phantom functions are assigned to a different domain.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Aug 22, 2024 | Mar 20, 2024 |
| Debian | — | Upgrade xen | Jul 30, 2024 | Mar 20, 2024 |
| Dell Powerstore Dsa2024398 | — | Upgrade Dell PowerStoreOS to the latest version | Oct 23, 2025 | Sep 17, 2024 |
| Dell Powerstore Dsa2024432 | — | Upgrade Dell PowerStoreOS to the latest version | Oct 23, 2025 | Oct 29, 2024 |
| Gentoo Linux | — | Upgrade app-emulation/xen. | Sep 23, 2024 | Mar 20, 2024 |
| Suse | — | Upgrade xen-toolsUpgrade xen-libs-32bitUpgrade xen-libsUpgrade xen-tools-domuUpgrade xen-develUpgrade xen-doc-htmlUpgrade xen-tools-xendomains-wait-diskUpgrade xen | Jan 31, 2024 | Jan 30, 2024 |
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