cve-2023-52617
Vulnerability from cvelistv5
Published
2024-03-18 10:19
Modified
2024-12-19 08:22
Severity ?
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Summary
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
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0233b836312e39a3c763fb53512b3fa455b473b3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1d83c85922647758c1f1e4806a4c5c3cf591a20a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a5d0528cf19dbf060313dffbe047bc11c90c24c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8c293549946ee5078ed0ab77793cec365559355
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/df25461119d987b8c81d232cfe4411e91dcabe66
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e129c7fa7070fbce57feb0bfc5eaa65eef44b693
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff1c7e2fb9e9c3f53715fbe04d3ac47b80be7eb8
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0233b836312e39a3c763fb53512b3fa455b473b3
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1d83c85922647758c1f1e4806a4c5c3cf591a20a
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4a5d0528cf19dbf060313dffbe047bc11c90c24c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d8c293549946ee5078ed0ab77793cec365559355
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/df25461119d987b8c81d232cfe4411e91dcabe66
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e129c7fa7070fbce57feb0bfc5eaa65eef44b693
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ff1c7e2fb9e9c3f53715fbe04d3ac47b80be7eb8
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

To clipboard 

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}


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