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CVE-2025-71100

Estado: ModificadaAlta (7.8)—

In the Linux kernel, the following vulnerability has been resolved:

wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()

TID getting from ieee80211_get_tid() might be out of range of array size of sta_entry->tids[], so check TID is less than MAX_TID_COUNT. Othwerwise, UBSAN warn:

Detalles técnicos trazas, registros y código del informe original
 UBSAN: array-index-out-of-bounds in drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c:514:30
 index 10 is out of range for type 'rtl_tid_data [9]'

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:L + PR:L sin UI → escalada local. El desbordamiento de array en drivers wifi puede ejecutar código kernel o causar DoS. CWE-129 (out-of-bounds) confirma la vulnerabilidad de memoria.

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

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationFilter Network Traffic

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2025-71100",
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              "version": "6.18.4",
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              "version": "6.19",
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          "programFiles": [
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  "published": "2026-01-13T16:16:09.920",
  "references": [
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      "url": "https://git.kernel.org/stable/c/90a15ff324645aa806d81fa349497cd964861b66",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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      "source": "nvd@nist.gov",
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          "value": "CWE-129"
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()\n\nTID getting from ieee80211_get_tid() might be out of range of array size\nof sta_entry->tids[], so check TID is less than MAX_TID_COUNT. Othwerwise,\nUBSAN warn:\n\n UBSAN: array-index-out-of-bounds in drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c:514:30\n index 10 is out of range for type 'rtl_tid_data [9]'"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\n\nwifi: rtlwifi: 8192cu: solución a tid fuera de rango en rtl92cu_tx_fill_desc()\n\nEl TID obtenido de ieee80211_get_tid() podría estar fuera del rango del tamaño del array de sta_entry->tids[], por lo tanto, se verifica que el TID sea menor que MAX_TID_COUNT. De lo contrario, UBSAN advierte:\n\n UBSAN: índice de array fuera de límites en drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c:514:30\n el índice 10 está fuera de rango para el tipo 'rtl_tid_data [9]'"
    }
  ],
  "lastModified": "2026-07-30T06:24:51.197",
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