CVE-2024-56561

HighCVSS 7.8/10Last modified Jun 17, 2026

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:

- 'epc->dev' 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 'epc->dev' is also wrong.

Fix these issues by passing 'epc->dev.parent' to pci_bus_release_domain_nr() and also do it before device_unregister().

[mani: reworded subject and description]

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published
Dec 27, 2024
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2024-56561: High severity, CVSS 7.8 | Vulnix