CVE-2024-56561

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

27/12/2024

Last modified:

11/02/2025

Description

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Fix PCI domain ID release in pci_epc_destroy() pci_epc_destroy() invokes pci_bus_release_domain_nr() to release the PCI domain ID, but there are two issues: - &#39;epc->dev&#39; is passed to pci_bus_release_domain_nr() which was already freed by device_unregister(), leading to a use-after-free issue. - Domain ID corresponds to the EPC device parent, so passing &#39;epc->dev&#39; is also wrong. Fix these issues by passing &#39;epc->dev.parent&#39; to pci_bus_release_domain_nr() and also do it before device_unregister(). [mani: reworded subject and description]

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High