CVE-2024-31143 - CVE House
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Status published Unknown CVE-2024-31143

double unlock in x86 guest IRQ handling

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • This issue was discovered by Jan Beulich of SUSE.

References

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Affected Vendor

Affected Software

Xen
Vulnerable Versions:
consult Xen advisory XSA-458

Timeline

Official Publish: July 18th, 2024
Last Modified: April 26th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.