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
Metrics
Affected Vendors & Products
References
History
Tue, 08 Apr 2025 15:45:00 +0000
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First Time appeared |
Debian
Debian debian Linux Linux Linux linux Kernel |
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Weaknesses | CWE-459 | |
CPEs | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
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Vendors & Products |
Debian
Debian debian Linux Linux Linux linux Kernel |
Fri, 22 Nov 2024 12:00:00 +0000
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References |
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Mon, 04 Nov 2024 13:45:00 +0000
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References |
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Thu, 31 Oct 2024 15:15:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-04-10T20:25:39.733Z
Reserved: 2024-03-06T09:52:12.089Z
Link: CVE-2023-52617

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

Status : Analyzed
Published: 2024-03-18T11:15:09.057
Modified: 2025-04-08T15:26:38.597
Link: CVE-2023-52617
