CVE-2024-31143: double unlock in x86 guest IRQ handling
First published: Tue Jul 16 2024(Updated: )
An optional feature of PCI MSI called "Multiple Message" allows a device to use multiple consecutive interrupt vectors. Unlike for MSI-X, the setting up of these consecutive vectors needs to happen all in one go. In this handling an error path could be taken in different situations, with or without a particular lock held. This error path wrongly releases the lock even when it is not currently held.
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-2024-31143?
CVE-2024-31143 is classified as a high-severity vulnerability due to its potential impact on system stability and security.
How do I fix CVE-2024-31143?
To mitigate CVE-2024-31143, users should update to the latest patched version of Xen that addresses this vulnerability.
What software versions are affected by CVE-2024-31143?
CVE-2024-31143 primarily affects the unstable version of Xen, but users should check the latest security advisories for any updates.
What are the potential impacts of CVE-2024-31143?
The potential impacts of CVE-2024-31143 include system crashes and exploitation opportunities that could lead to unauthorized access.
Is CVE-2024-31143 being actively exploited?
As of the latest information, there are no confirmed reports of active exploitation of CVE-2024-31143, but users should remain vigilant.
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