In the Linux kernel, the following vulnerability has been resolved: PCI: switchtec: Fix stdev_release() crash after surprise hot remove A PCI device hot removal may occur while stdev->cdev is held open. The call to stdev_release() then happens during close or exit, at a point way past switchtec_pci_remove(). Otherwise the last ref would vanish with the trailing put_device(), just before return. At that later point in time, the devm cleanup has already removed the stdev->mmio_mrpc mapping. Also, the stdev->pdev reference was not a counted one. Therefore, in DMA mode, the iowrite32() in stdev_release() will cause a fatal page fault, and the subsequent dma_free_coherent(), if reached, would pass a stale &stdev->pdev->dev pointer. Fix by moving MRPC DMA shutdown into switchtec_pci_remove(), after stdev_kill(). Counting the stdev->pdev ref is now optional, but may prevent future accidents. Reproducible via the script at https://lore.kernel.org/r/20231113212150.96410-1-dns@arista.com
History

Mon, 04 Nov 2024 13:45:00 +0000

Type Values Removed Values Added
References

Thu, 31 Oct 2024 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-03-18T10:19:04.651Z

Updated: 2024-11-04T14:49:48.311Z

Reserved: 2024-03-06T09:52:12.089Z

Link: CVE-2023-52617

cve-icon Vulnrichment

Updated: 2024-08-02T23:03:21.360Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-03-18T11:15:09.057

Modified: 2024-11-04T13:16:41.580

Link: CVE-2023-52617

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-03-18T00:00:00Z

Links: CVE-2023-52617 - Bugzilla