FKIE_CVE-2023-52984

Vulnerability from fkie_nvd - Published: 2025-03-27 17:15 - Updated: 2025-10-01 18:15
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: net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices The probe() function is only used for the DP83822 PHY, leaving the private data pointer uninitialized for the smaller DP83825/26 models. While all uses of the private data structure are hidden in 82822 specific callbacks, configuring the interrupt is shared across all models. This causes a NULL pointer dereference on the smaller PHYs as it accesses the private data unchecked. Verifying the pointer avoids that.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2cd1e9c013ec56421c58921b1ddf1d2d53bd47faPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/362a2f5531dc0e5b0b5b3e3a541000dbffa75461Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/422ae7d9c7221e8d4c8526d0f54106307d69d2dcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/78901b10522cdf6badf24acf65a892637596bcccPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices\n\nThe probe() function is only used for the DP83822 PHY, leaving the\nprivate data pointer uninitialized for the smaller DP83825/26 models.\nWhile all uses of the private data structure are hidden in 82822 specific\ncallbacks, configuring the interrupt is shared across all models.\nThis causes a NULL pointer dereference on the smaller PHYs as it accesses\nthe private data unchecked. Verifying the pointer avoids that."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: phy: dp83822: Se corrige el acceso a puntero nulo en dispositivos DP83825/DP83826. La funci\u00f3n probe() solo se utiliza para la estructura f\u00edsica (PHY) DP83822, lo que deja el puntero de datos privados sin inicializar para los modelos DP83825/26 m\u00e1s peque\u00f1os. Si bien todos los usos de la estructura de datos privados est\u00e1n ocultos en las devoluciones de llamada espec\u00edficas de 82822, la configuraci\u00f3n de la interrupci\u00f3n se comparte entre todos los modelos. Esto provoca una desreferencia de puntero nulo en las estructuras f\u00edsicas (PHY) m\u00e1s peque\u00f1as, ya que accede a los datos privados sin verificar. Verificar el puntero evita esto."
    }
  ],
  "id": "CVE-2023-52984",
  "lastModified": "2025-10-01T18:15:34.887",
  "metrics": {
    "cvssMetricV31": [
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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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  "published": "2025-03-27T17:15:45.677",
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-476"
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