In x86's APIC (Advanced Programmable Interrupt Controller) architecture, error conditions are reported in a status register. Furthermore, the OS can opt to receive an interrupt when a new error occurs. It is possible to configure the error interrupt with an illegal vector, which generates an error when an error interrupt is raised. This case causes Xen to recurse through vlapic_error(). The recursion itself is bounded; errors accumulate in the the status register and only generate an interrupt when a new status bit becomes set. However, the lock protecting this state in Xen will try to be taken recursively, and deadlock.
History

Fri, 22 Nov 2024 12:00:00 +0000


Wed, 20 Nov 2024 22:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-209
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}


Wed, 25 Sep 2024 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 25 Sep 2024 10:45:00 +0000

Type Values Removed Values Added
Description In x86's APIC (Advanced Programmable Interrupt Controller) architecture, error conditions are reported in a status register. Furthermore, the OS can opt to receive an interrupt when a new error occurs. It is possible to configure the error interrupt with an illegal vector, which generates an error when an error interrupt is raised. This case causes Xen to recurse through vlapic_error(). The recursion itself is bounded; errors accumulate in the the status register and only generate an interrupt when a new status bit becomes set. However, the lock protecting this state in Xen will try to be taken recursively, and deadlock.
Title x86: Deadlock in vlapic_error()
References

cve-icon MITRE

Status: PUBLISHED

Assigner: XEN

Published: 2024-09-25T10:31:57.371Z

Updated: 2024-11-20T21:33:14.401Z

Reserved: 2024-09-09T14:43:11.826Z

Link: CVE-2024-45817

cve-icon Vulnrichment

Updated: 2024-09-25T11:03:12.931Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-09-25T11:15:12.277

Modified: 2024-11-21T09:38:08.627

Link: CVE-2024-45817

cve-icon Redhat

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