CVE-2023-46839

Source
https://nvd.nist.gov/vuln/detail/CVE-2023-46839
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-46839.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-46839
Downstream
Related
Published
2024-03-20T11:15:08Z
Modified
2025-08-09T20:01:28Z
Summary
[none]
Details

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.

References

Affected packages