CVE-2026-23178

In the Linux kernel, the following vulnerability has been resolved: HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report() `i2c_hid_xfer` is used to read `recv_len + sizeof(__le16)` bytes of data into `ihid->rawbuf`. The former can come from the userspace in the hidraw driver and is only bounded by HID_MAX_BUFFER_SIZE(16384) by default (unless we also set `max_buffer_size` field of `struct hid_ll_driver` which we do not). The latter has size determined at runtime by the maximum size of different report types you could receive on any particular device and can be a much smaller value. Fix this by truncating `recv_len` to `ihid->bufsize - sizeof(__le16)`. The impact is low since access to hidraw devices requires root.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/2124279f1f8c32c1646ce98e75a1a39b23b7db76
https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29
https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e
https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219
https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9

Configurations

No configuration.

History

No history.

Information

Published : 2026-02-14 17:15

Updated : 2026-06-17 10:21

NVD link : CVE-2026-23178

Mitre link : CVE-2026-23178

CVE.ORG link : CVE-2026-23178

JSON object : View

Products Affected

No product.

CWE

No CWE.

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sizeof(__le16)`.\n\nThe impact is low since access to hidraw devices requires root."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nHID: i2c-hid: corrige un potencial desbordamiento de b\u00fafer en i2c_hid_get_report()\n\n'i2c_hid_xfer' se utiliza para leer 'recv_len + sizeof(__le16)' bytes de datos en 'ihid->rawbuf'.\n\nEl primero puede provenir del espacio de usuario en el controlador hidraw y est\u00e1 limitado \u00fanicamente por HID_MAX_BUFFER_SIZE(16384) por defecto (a menos que tambi\u00e9n configuremos el campo 'max_buffer_size' de 'struct hid_ll_driver', lo cual no hacemos).\n\nEl segundo tiene un tama\u00f1o determinado en tiempo de ejecuci\u00f3n por el tama\u00f1o m\u00e1ximo de los diferentes tipos de informes que se podr\u00edan recibir en cualquier dispositivo particular y puede ser un valor mucho menor.\n\nEsto se soluciona truncando 'recv_len' a 'ihid->bufsize - sizeof(__le16)'.\n\nEl impacto es bajo ya que el acceso a los dispositivos hidraw requiere root."}], "lastModified": "2026-06-17T10:21:02.753", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}