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CVE-2024-31143

Date: July 18, 2024

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.

Language: C

Severity Score

Related Resources (7)

https://xenbits.xenproject.org/xsa/advisory-458.html
http://xenbits.xen.org/xsa/advisory-458.html
http://www.openwall.com/lists/oss-security/2024/07/16/3
https://nvd.nist.gov/vuln/detail/CVE-2024-31143
https://github.com/xen-project/xen/commit/57338346f29cea7b183403561bdc5f407163b846
https://xenbits.xen.org/xsa/xsa458.patch
https://www.mend.io/vulnerability-database/CVE-2024-31143

Severity Score

Weakness Type (CWE)

Unlock of a Resource that is not Locked

CWE-832

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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