CVE-2025-38103
Estado: AnalizadaAlta (7.1)—
In the Linux kernel, the following vulnerability has been resolved:
HID: usbhid: Eliminate recurrent out-of-bounds bug in usbhid_parse()
Update struct hid_descriptor to better reflect the mandatory and optional parts of the HID Descriptor as per USB HID 1.11 specification. Note: the kernel currently does not parse any optional HID class descriptors, only the mandatory report descriptor.
Update all references to member element desc[0] to rpt_desc.
Add test to verify bLength and bNumDescriptors values are valid.
Replace the for loop with direct access to the mandatory HID class descriptor member for the report descriptor. This eliminates the possibility of getting an out-of-bounds fault.
Leer descripción completaMostrar menos
Add a warning message if the HID descriptor contains any unsupported optional HID class descriptors.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Puntuación base: 7.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.21%
- Percentil entre todas las CVEs puntuadas: 11
- Fecha de la puntuación: 5/10/2026
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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation75 % - Impacto principal
T1005Data from Local Systemcollection70 % - Impacto secundario
T1499Endpoint Denial of Serviceimpact65 %
Vulnerabilidad local (AV:L/PR:L) de lectura de memoria fuera de límites (CWE-125) en el kernel Linux que permite a un atacante con privilegios locales leer datos sensibles (C:H) o causar denegación de servicio (A:H) explotando un descriptor HID USB malformado.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (2)
CWE
- CWE-125
Referencias
- https://git.kernel.org/stable/c/1df80d748f984290c895e843401824215dcfbfb0
- https://git.kernel.org/stable/c/41827a2dbdd7880df9881506dee13bc88d4230bb
- https://git.kernel.org/stable/c/485e1b741eb838cbe1d6b0e81e5ab62ae6c095cf
- https://git.kernel.org/stable/c/4fa7831cf0ac71a0a345369d1a6084f2b096e55e
- https://git.kernel.org/stable/c/74388368927e9c52a69524af5bbd6c55eb4690de
- https://git.kernel.org/stable/c/7a6d6b68db128da2078ccd9a751dfa3f75c9cf5b
- https://git.kernel.org/stable/c/a8f842534807985d3a676006d140541b87044345
- https://git.kernel.org/stable/c/fe7f7ac8e0c708446ff017453add769ffc15deed
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: usbhid: Eliminate recurrent out-of-bounds bug in usbhid_parse()\n\nUpdate struct hid_descriptor to better reflect the mandatory and\noptional parts of the HID Descriptor as per USB HID 1.11 specification.\nNote: the kernel currently does not parse any optional HID class\ndescriptors, only the mandatory report descriptor.\n\nUpdate all references to member element desc[0] to rpt_desc.\n\nAdd test to verify bLength and bNumDescriptors values are valid.\n\nReplace the for loop with direct access to the mandatory HID class\ndescriptor member for the report descriptor. This eliminates the\npossibility of getting an out-of-bounds fault.\n\nAdd a warning message if the HID descriptor contains any unsupported\noptional HID class descriptors."
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