CVE-2023-46839
MEDIUMDescription
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.
Is your site exposed to CVE-2023-46839?
Run a free security scan — no signup, results in seconds.
CVSS v3.1 Score
Affected Products
| Vendor | Product |
|---|---|
| xen | xen |
| fedoraproject | fedora |
References
Frequently Asked Questions
What is CVE-2023-46839? +
How severe is CVE-2023-46839? +
What products are affected by CVE-2023-46839? +
How do I check if I'm vulnerable to CVE-2023-46839? +
Related Vulnerabilities
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] There are multiple …
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] There are multiple …
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] There are multiple …
The caching invalidation guidelines from the AMD-Vi specification (48882—Rev 3.07-PUB—Oct 2022) is incorrect on some hardware, as devices will malfunction …
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] libfsimage contains parsing …
For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in …