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.

Classification

CVE ID: CVE-2024-31143

CVSS Base Severity: HIGH

CVSS Base Score: 7.5

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor: Xen

Product: Xen

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.2% (probability of being exploited)

EPSS Percentile: 42.24% (scored less or equal to compared to others)

EPSS Date: 2025-05-25 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: total

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2024-31143
https://xenbits.xenproject.org/xsa/advisory-458.html

Timeline