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CVE-2025-21773

Estado: ModificadaMedia (5.5)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: etas_es58x: fix potential NULL pointer dereference on udev->serial\n\nThe driver assumed that es58x_dev->udev->serial 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->udev->serial before accessing it."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: etas_es58x: corrige una posible desreferencia de puntero NULL en udev->serial El controlador asumió que es58x_dev->udev->serial nunca podría ser NULL. Si bien esto es cierto en dispositivos disponibles comercialmente, un atacante podría falsificar la identidad del dispositivo proporcionando un número de serie USB NULL. Eso activaría una desreferencia de puntero NULL. Agregue una verificación en es58x_dev->udev->serial antes de acceder a él."
    }
  ],
  "lastModified": "2026-06-17T08:44:14.660",
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