CVE-2024-31143: double unlock in x86 guest IRQ handling
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.
Affected Software
Remediation
Patch Available
Patch Available
Event History
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.