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.

• CWE-832

• https://xenbits.xenproject.org/xsa/advisory-458.htmlPatch, Vendor Advisory
• http://www.openwall.com/lists/oss-security/2024/07/16/3Mailing List, Third Party Advisory
• http://xenbits.xen.org/xsa/advisory-458.htmlPatch, Vendor Advisory
• https://xenbits.xenproject.org/xsa/advisory-458.htmlPatch, Vendor Advisory

Published

Jul 18, 2024

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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