fkie_cve-2022-49187
Vulnerability from fkie_nvd
Published
2025-02-26 07:00
Modified
2025-10-01 20:15
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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: clk: Fix clk_hw_get_clk() when dev is NULL Any registered clk_core structure can have a NULL pointer in its dev field. While never actually documented, this is evidenced by the wide usage of clk_register and clk_hw_register with a NULL device pointer, and the fact that the core of_clk_hw_register() function also passes a NULL device pointer. A call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that case will result in a NULL pointer derefence when it calls dev_name() on that NULL device pointer. Add a test for this case and use NULL as the dev_id if the device pointer is NULL.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c1b56df451716ba207bbf59f303473643eee4fdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570facPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: Fix clk_hw_get_clk() when dev is NULL\n\nAny registered clk_core structure can have a NULL pointer in its dev\nfield. While never actually documented, this is evidenced by the wide\nusage of clk_register and clk_hw_register with a NULL device pointer,\nand the fact that the core of_clk_hw_register() function also passes a\nNULL device pointer.\n\nA call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that\ncase will result in a NULL pointer derefence when it calls dev_name() on\nthat NULL device pointer.\n\nAdd a test for this case and use NULL as the dev_id if the device\npointer is NULL."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: clk: Arreglar clk_hw_get_clk() cuando dev es NULL Cualquier estructura clk_core registrada puede tener un puntero NULL en su campo dev. Si bien nunca se document\u00f3 realmente, esto se evidencia por el amplio uso de clk_register y clk_hw_register con un puntero de dispositivo NULL, y el hecho de que la funci\u00f3n principal of_clk_hw_register() tambi\u00e9n pasa un puntero de dispositivo NULL. Una llamada a clk_hw_get_clk() en una estructura clk_hw cuyo clk_core est\u00e1 en ese caso dar\u00e1 como resultado una desreferencia de puntero NULL cuando llame a dev_name() en ese puntero de dispositivo NULL. Agregue una prueba para este caso y use NULL como dev_id si el puntero del dispositivo es NULL."
    }
  ],
  "id": "CVE-2022-49187",
  "lastModified": "2025-10-01T20:15:54.180",
  "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",
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          "confidentialityImpact": "NONE",
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          "scope": "UNCHANGED",
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  "published": "2025-02-26T07:00:55.803",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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    {
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      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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