fkie_cve-2024-47705
Vulnerability from fkie_nvd
Published
2024-10-21 12:15
Modified
2024-10-24 13:35
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: block: fix potential invalid pointer dereference in blk_add_partition The blk_add_partition() function initially used a single if-condition (IS_ERR(part)) to check for errors when adding a partition. This was modified to handle the specific case of -ENXIO separately, allowing the function to proceed without logging the error in this case. However, this change unintentionally left a path where md_autodetect_dev() could be called without confirming that part is a valid pointer. This commit separates the error handling logic by splitting the initial if-condition, improving code readability and handling specific error scenarios explicitly. The function now distinguishes the general error case from -ENXIO without altering the existing behavior of md_autodetect_dev() calls.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26e197b7f9240a4ac301dd0ad520c0c697c2ea7dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4bc4272e2506941c3f3d4fb8b0c659ee814dcf6fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64cf2a39202ca2d9df5ee70eb310b6141ce2b8edPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/652039ba477c9a4ab43740cf2cb0d068d53508c2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/80f5bfbb80ea1615290dbc24f49d3d8c86db58fePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/afe53ea9b378c376101d99d216f13b6256f75189Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cc4d21d9492db4e534d3e01253cf885c90dd2a8bPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix potential invalid pointer dereference in blk_add_partition\n\nThe blk_add_partition() function initially used a single if-condition\n(IS_ERR(part)) to check for errors when adding a partition. This was\nmodified to handle the specific case of -ENXIO separately, allowing the\nfunction to proceed without logging the error in this case. However,\nthis change unintentionally left a path where md_autodetect_dev()\ncould be called without confirming that part is a valid pointer.\n\nThis commit separates the error handling logic by splitting the\ninitial if-condition, improving code readability and handling specific\nerror scenarios explicitly. The function now distinguishes the general\nerror case from -ENXIO without altering the existing behavior of\nmd_autodetect_dev() calls."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: block: fix potential no valid pointer dereference in blk_add_partition La funci\u00f3n blk_add_partition() inicialmente usaba una sola condici\u00f3n if (IS_ERR(part)) para verificar errores al agregar una partici\u00f3n. Esto se modific\u00f3 para manejar el caso espec\u00edfico de -ENXIO por separado, lo que permite que la funci\u00f3n contin\u00fae sin registrar el error en este caso. Sin embargo, este cambio dej\u00f3 involuntariamente una ruta donde se pod\u00eda llamar a md_autodetect_dev() sin confirmar que part es un puntero v\u00e1lido. Esta confirmaci\u00f3n separa la l\u00f3gica de manejo de errores al dividir la condici\u00f3n if inicial, lo que mejora la legibilidad del c\u00f3digo y maneja escenarios de error espec\u00edficos de manera expl\u00edcita. La funci\u00f3n ahora distingue el caso de error general de -ENXIO sin alterar el comportamiento existente de las llamadas a md_autodetect_dev()."
    }
  ],
  "id": "CVE-2024-47705",
  "lastModified": "2024-10-24T13:35:51.807",
  "metrics": {
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        "cvssData": {
          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-10-21T12:15:07.020",
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  "vulnStatus": "Analyzed",
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          "value": "CWE-476"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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