FKIE_CVE-2024-26814

Vulnerability from fkie_nvd - Published: 2024-04-05 09:15 - Updated: 2025-03-27 21:36
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: vfio/fsl-mc: Block calling interrupt handler without trigger The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is initially NULL and may become NULL if the user sets the trigger eventfd to -1. The interrupt handler itself is guaranteed that trigger is always valid between request_irq() and free_irq(), but the loopback testing mechanisms to invoke the handler function need to test the trigger. The triggering and setting ioctl paths both make use of igate and are therefore mutually exclusive. The vfio-fsl-mc driver does not make use of irqfds, nor does it support any sort of masking operations, therefore unlike vfio-pci and vfio-platform, the flow can remain essentially unchanged.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7edePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7edePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List
Impacted products
Vendor Product Version
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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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/fsl-mc: Block calling interrupt handler without trigger\n\nThe eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is\ninitially NULL and may become NULL if the user sets the trigger\neventfd to -1.  The interrupt handler itself is guaranteed that\ntrigger is always valid between request_irq() and free_irq(), but\nthe loopback testing mechanisms to invoke the handler function\nneed to test the trigger.  The triggering and setting ioctl paths\nboth make use of igate and are therefore mutually exclusive.\n\nThe vfio-fsl-mc driver does not make use of irqfds, nor does it\nsupport any sort of masking operations, therefore unlike vfio-pci\nand vfio-platform, the flow can remain essentially unchanged."
    },
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      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: vfio/fsl-mc: Bloquear el controlador de interrupciones de llamada sin disparador. El puntero de disparo eventfd_ctx del objeto vfio_fsl_mc_irq es inicialmente NULL y puede convertirse en NULL si el usuario establece el disparador eventfd en -1. El propio controlador de interrupciones garantiza que el disparador siempre ser\u00e1 v\u00e1lido entre request_irq() y free_irq(), pero los mecanismos de prueba de bucle invertido para invocar la funci\u00f3n del controlador deben probar el disparador. Las rutas de activaci\u00f3n y configuraci\u00f3n de ioctl utilizan igate y, por lo tanto, son mutuamente excluyentes. El controlador vfio-fsl-mc no utiliza irqfds ni admite ning\u00fan tipo de operaci\u00f3n de enmascaramiento; por lo tanto, a diferencia de vfio-pci y vfio-platform, el flujo puede permanecer esencialmente sin cambios."
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  "id": "CVE-2024-26814",
  "lastModified": "2025-03-27T21:36:57.227",
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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        "source": "nvd@nist.gov",
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