CVE-2023-46840: VT-d: Failure to quarantine devices in !HVM builds
First published: Tue Jan 30 2024(Updated: )
Incorrect placement of a preprocessor directive in source code results in logic that doesn't operate as intended when support for HVM guests is compiled out of Xen.
Credit: security@xen.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen XAPI |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-46840?
The severity of CVE-2023-46840 is classified as medium, as it involves an incorrect preprocessor directive impacting the functionality for HVM guests.
How do I fix CVE-2023-46840?
To fix CVE-2023-46840, ensure that the source code is reviewed for the correct placement of preprocessor directives and recompile Xen with the appropriate support.
What software versions are affected by CVE-2023-46840?
CVE-2023-46840 affects the Xen hypervisor, specifically configurations where support for HVM guests is compiled out.
What are the potential impacts of CVE-2023-46840?
The potential impacts of CVE-2023-46840 include unintended behavior and operational issues for systems relying on HVM guest support.
Is there a workaround for CVE-2023-46840?
A temporary workaround for CVE-2023-46840 may involve avoiding the configuration that compiles out support for HVM guests until a fix is applied.
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