Vulnerability in Xen
CVE-2024-31143
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.
EPSS: 0.005 (40.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Xen — versions consult Xen advisory XSA-458
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@xen.org (Patch, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2024-31143?
- CVE-2024-31143 is a high-severity vulnerability in Xen, classified under CWE-832. CVSS score: 7.5/10. Published 2024-07-18.
- How severe is CVE-2024-31143?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2024-31143 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.