fkie_cve-2021-47258
Vulnerability from fkie_nvd
Published
2024-05-21 15:15
Modified
2025-04-30 15:05
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: scsi: core: Fix error handling of scsi_host_alloc() After device is initialized via device_initialize(), or its name is set via dev_set_name(), the device has to be freed via put_device(). Otherwise device name will be leaked because it is allocated dynamically in dev_set_name(). Fix the leak by replacing kfree() with put_device(). Since scsi_host_dev_release() properly handles IDA and kthread removal, remove special-casing these from the error handling as well.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2dc85045ae65b9302a1d2e2ddd7ce4c030153a6aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/45d83db4728127944b237c0c8248987df9d478e7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/66a834d092930cf41d809c0e989b13cd6f9ca006Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/79296e292d67fa7b5fb8d8c27343683e823872c8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a696ce1d5d16a33a6cd6400bbcc0339b2460e11Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8958181c1663e24a13434448e7d6b96b5d04900aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/db08ce595dd64ea9859f7d088b51cbfc8e685c66Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2dc85045ae65b9302a1d2e2ddd7ce4c030153a6aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/45d83db4728127944b237c0c8248987df9d478e7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/66a834d092930cf41d809c0e989b13cd6f9ca006Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/79296e292d67fa7b5fb8d8c27343683e823872c8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7a696ce1d5d16a33a6cd6400bbcc0339b2460e11Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8958181c1663e24a13434448e7d6b96b5d04900aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/db08ce595dd64ea9859f7d088b51cbfc8e685c66Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Fix error handling of scsi_host_alloc()\n\nAfter device is initialized via device_initialize(), or its name is set via\ndev_set_name(), the device has to be freed via put_device().  Otherwise\ndevice name will be leaked because it is allocated dynamically in\ndev_set_name().\n\nFix the leak by replacing kfree() with put_device(). Since\nscsi_host_dev_release() properly handles IDA and kthread removal, remove\nspecial-casing these from the error handling as well."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: core: corrige el manejo de errores de scsi_host_alloc(). Despu\u00e9s de que el dispositivo se inicializa mediante device_initialize(), o su nombre se establece mediante dev_set_name(), el dispositivo debe liberarse mediante put_device (). De lo contrario, se filtrar\u00e1 el nombre del dispositivo porque se asigna din\u00e1micamente en dev_set_name(). Solucione la fuga reemplazando kfree() con put_device(). Dado que scsi_host_dev_release() maneja adecuadamente la eliminaci\u00f3n de IDA y kthread, elimine tambi\u00e9n estas may\u00fasculas y min\u00fasculas especiales del manejo de errores."
    }
  ],
  "id": "CVE-2021-47258",
  "lastModified": "2025-04-30T15:05:14.067",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "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",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-05-21T15:15:14.537",
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          "value": "CWE-401"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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