fkie_cve-2023-53049
Vulnerability from fkie_nvd
Published
2025-05-02 16:15
Modified
2025-11-12 18:34
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: usb: ucsi: Fix NULL pointer deref in ucsi_connector_change() When ucsi_init() fails, ucsi->connector is NULL, yet in case of ucsi_acpi we may still get events which cause the ucs_acpi code to call ucsi_connector_change(), which then derefs the NULL ucsi->connector pointer. Fix this by not setting ucsi->ntfy inside ucsi_init() until ucsi_init() has succeeded, so that ucsi_connector_change() ignores the events because UCSI_ENABLE_NTFY_CONNECTOR_CHANGE is not set in the ntfy mask.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.3
linux linux_kernel 6.3
linux linux_kernel 6.3


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: ucsi: Fix NULL pointer deref in ucsi_connector_change()\n\nWhen ucsi_init() fails, ucsi-\u003econnector is NULL, yet in case of\nucsi_acpi we may still get events which cause the ucs_acpi code to call\nucsi_connector_change(), which then derefs the NULL ucsi-\u003econnector\npointer.\n\nFix this by not setting ucsi-\u003entfy inside ucsi_init() until ucsi_init()\nhas succeeded, so that ucsi_connector_change() ignores the events\nbecause UCSI_ENABLE_NTFY_CONNECTOR_CHANGE is not set in the ntfy mask."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: ucsi: Se corrige la desreferencia del puntero nulo en ucsi_connector_change(). Cuando ucsi_init() falla, ucsi-\u0026gt;connector es nulo; sin embargo, en el caso de ucsi_acpi, a\u00fan pueden aparecer eventos que provocan que el c\u00f3digo ucs_acpi llame a ucsi_connector_change(), que a su vez desreferencia el puntero nulo ucsi-\u0026gt;connector. Para solucionar esto, no configure ucsi-\u0026gt;ntfy dentro de ucsi_init() hasta que ucsi_init() se haya ejecutado correctamente, de modo que ucsi_connector_change() ignore los eventos, ya que UCSI_ENABLE_NTFY_CONNECTOR_CHANGE no est\u00e1 configurado en la m\u00e1scara ntfy."
    }
  ],
  "id": "CVE-2023-53049",
  "lastModified": "2025-11-12T18:34:10.377",
  "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",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2025-05-02T16:15:23.990",
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  "vulnStatus": "Analyzed",
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          "lang": "en",
          "value": "CWE-476"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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