FKIE_CVE-2025-21773

Vulnerability from fkie_nvd - Published: 2025-02-27 03:15 - Updated: 2025-10-01 20:18
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: can: etas_es58x: fix potential NULL pointer dereference on udev->serial The driver assumed that es58x_dev->udev->serial could never be NULL. While this is true on commercially available devices, an attacker could spoof the device identity providing a NULL USB serial number. That would trigger a NULL pointer dereference. Add a check on es58x_dev->udev->serial before accessing it.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1590667a60753ee5a54871f2840ceefd4a7831faPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5059ea98d7bc133903d3e47ab36df6ed11d0c95fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/722e8e1219c8b6ac2865011fe339315d6a8d0721Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a1ad2109ce41c9e3912dadd07ad8a9c640064ffbPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.14
linux linux_kernel 6.14
To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: etas_es58x: fix potential NULL pointer dereference on udev-\u003eserial\n\nThe driver assumed that es58x_dev-\u003eudev-\u003eserial could never be NULL.\nWhile this is true on commercially available devices, an attacker\ncould spoof the device identity providing a NULL USB serial number.\nThat would trigger a NULL pointer dereference.\n\nAdd a check on es58x_dev-\u003eudev-\u003eserial before accessing it."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: etas_es58x: corrige una posible desreferencia de puntero NULL en udev-\u0026gt;serial El controlador asumi\u00f3 que es58x_dev-\u0026gt;udev-\u0026gt;serial nunca podr\u00eda ser NULL. Si bien esto es cierto en dispositivos disponibles comercialmente, un atacante podr\u00eda falsificar la identidad del dispositivo proporcionando un n\u00famero de serie USB NULL. Eso activar\u00eda una desreferencia de puntero NULL. Agregue una verificaci\u00f3n en es58x_dev-\u0026gt;udev-\u0026gt;serial antes de acceder a \u00e9l."
    }
  ],
  "id": "CVE-2025-21773",
  "lastModified": "2025-10-01T20:18:23.893",
  "metrics": {
    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
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          "confidentialityImpact": "NONE",
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  "published": "2025-02-27T03:15:17.970",
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  "vulnStatus": "Modified",
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}


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