fkie_cve-2023-52617
Vulnerability from fkie_nvd
Published
2024-03-18 11:15
Modified
2025-04-08 15:26
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/0233b836312e39a3c763fb53512b3fa455b473b3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1d83c85922647758c1f1e4806a4c5c3cf591a20aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a5d0528cf19dbf060313dffbe047bc11c90c24cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8c293549946ee5078ed0ab77793cec365559355Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/df25461119d987b8c81d232cfe4411e91dcabe66Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e129c7fa7070fbce57feb0bfc5eaa65eef44b693Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff1c7e2fb9e9c3f53715fbe04d3ac47b80be7eb8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0233b836312e39a3c763fb53512b3fa455b473b3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1d83c85922647758c1f1e4806a4c5c3cf591a20aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4a5d0528cf19dbf060313dffbe047bc11c90c24cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d8c293549946ee5078ed0ab77793cec365559355Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/df25461119d987b8c81d232cfe4411e91dcabe66Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e129c7fa7070fbce57feb0bfc5eaa65eef44b693Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ff1c7e2fb9e9c3f53715fbe04d3ac47b80be7eb8Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List, Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
debian debian_linux 10.0


To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: switchtec: Fix stdev_release() crash after surprise hot remove\n\nA PCI device hot removal may occur while stdev-\u003ecdev is held open. The call\nto stdev_release() then happens during close or exit, at a point way past\nswitchtec_pci_remove(). Otherwise the last ref would vanish with the\ntrailing put_device(), just before return.\n\nAt that later point in time, the devm cleanup has already removed the\nstdev-\u003emmio_mrpc mapping. Also, the stdev-\u003epdev reference was not a counted\none. Therefore, in DMA mode, the iowrite32() in stdev_release() will cause\na fatal page fault, and the subsequent dma_free_coherent(), if reached,\nwould pass a stale \u0026stdev-\u003epdev-\u003edev pointer.\n\nFix by moving MRPC DMA shutdown into switchtec_pci_remove(), after\nstdev_kill(). Counting the stdev-\u003epdev ref is now optional, but may prevent\nfuture accidents.\n\nReproducible via the script at\nhttps://lore.kernel.org/r/20231113212150.96410-1-dns@arista.com"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PCI: switchtec: corrige el bloqueo de stdev_release() despu\u00e9s de una eliminaci\u00f3n sorpresa en caliente. Puede ocurrir una eliminaci\u00f3n en caliente del dispositivo PCI mientras stdev-\u0026gt;cdev se mantiene abierto. La llamada a stdev_release() ocurre durante el cierre o la salida, en un punto mucho m\u00e1s all\u00e1 de switchtec_pci_remove(). De lo contrario, la \u00faltima referencia desaparecer\u00eda con el put_device() final, justo antes del retorno. En ese momento posterior, la limpieza devm ya elimin\u00f3 la asignaci\u00f3n stdev-\u0026gt;mmio_mrpc. Adem\u00e1s, la referencia stdev-\u0026gt;pdev no se contaba. Por lo tanto, en modo DMA, iowrite32() en stdev_release() causar\u00e1 un error de p\u00e1gina fatal, y el dma_free_coherent() posterior, si se alcanza, pasar\u00eda un puntero \u0026amp;stdev-\u0026gt;pdev-\u0026gt;dev obsoleto. Para solucionarlo, mueva el apagado de MRPC DMA a switchtec_pci_remove(), despu\u00e9s de stdev_kill(). Contar stdev-\u0026gt;pdev ref ahora es opcional, pero puede evitar accidentes futuros. Reproducible a trav\u00e9s del script en https://lore.kernel.org/r/20231113212150.96410-1-dns@arista.com"
    }
  ],
  "id": "CVE-2023-52617",
  "lastModified": "2025-04-08T15:26:38.597",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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  "vulnStatus": "Analyzed",
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          "value": "CWE-459"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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