fkie_cve-2024-56764
Vulnerability from fkie_nvd
Published
2025-01-06 17:15
Modified
2025-02-11 16:15
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ublk: detach gendisk from ublk device if add_disk() fails Inside ublk_abort_requests(), gendisk is grabbed for aborting all inflight requests. And ublk_abort_requests() is called when exiting the uring context or handling timeout. If add_disk() fails, the gendisk may have been freed when calling ublk_abort_requests(), so use-after-free can be caused when getting disk's reference in ublk_abort_requests(). Fixes the bug by detaching gendisk from ublk device if add_disk() fails.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75cd4005da5492129917a4a4ee45e81660556104Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7d680f2f76a3417fdfc3946da7471e81464f7b41Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 6.13
linux linux_kernel 6.13
linux linux_kernel 6.13
linux linux_kernel 6.13


To clipboard 

{
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    {
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              "matchCriteriaId": "E79883DD-75BE-4DA9-B4EC-AC6DE63BD438",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk: detach gendisk from ublk device if add_disk() fails\n\nInside ublk_abort_requests(), gendisk is grabbed for aborting all\ninflight requests. And ublk_abort_requests() is called when exiting\nthe uring context or handling timeout.\n\nIf add_disk() fails, the gendisk may have been freed when calling\nublk_abort_requests(), so use-after-free can be caused when getting\ndisk\u0027s reference in ublk_abort_requests().\n\nFixes the bug by detaching gendisk from ublk device if add_disk() fails."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ublk: separar gendisk del dispositivo ublk si add_disk() falla Dentro de ublk_abort_requests(), gendisk se toma para abortar todas las solicitudes en vuelo. Y ublk_abort_requests() se llama al salir del contexto uring o al gestionar el tiempo de espera. Si add_disk() falla, es posible que gendisk se haya liberado al llamar a ublk_abort_requests(), por lo que se puede producir un use-after-free al obtener la referencia del disco en ublk_abort_requests(). Corrige el error separando gendisk del dispositivo ublk si add_disk() falla."
    }
  ],
  "id": "CVE-2024-56764",
  "lastModified": "2025-02-11T16:15:47.927",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
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          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
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  "published": "2025-01-06T17:15:42.483",
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      "type": "Secondary"
    }
  ]
}


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