CVE-2026-64444
Estado: AnalizadaAlta (8.1)—
In the Linux kernel, the following vulnerability has been resolved:
staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop
The IE parsing loop in OnAssocRsp() advances by (pIE->length + 2) each iteration but only guards on i < pkt_len. When a malicious AP sends an AssocResponse whose last IE has only one byte remaining in the frame (the element_id byte lands at pkt_len-1), the loop reads pIE->length from pframe[pkt_len], which is one byte past the allocated receive buffer.
Additionally, even when the header bytes are in bounds, pIE->length itself can extend the data window beyond pkt_len, silently passing a truncated IE to the handler functions.
Detalles técnicos trazas, registros y código del informe original
Add two guards at the top of the loop body: 1. Break if fewer than sizeof(*pIE) bytes remain (can't read header). 2. Break if the IE's declared data extends past pkt_len.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Puntuación base: 8.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.41%
- Percentil entre todas las CVEs puntuadas: 33
- Fecha de la puntuación: 6/10/2026
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
T1210Exploitation of Remote Serviceslateral movement75 % - Impacto principal
T1005Data from Local Systemcollection65 %
AV:A (red adyacente) + OOB read (CWE-125) que permite leer memoria más allá del buffer. El atacante (AP malicioso) explota servicios de red adyacente (WiFi). El impacto es acceso a datos en 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
Tecnologías afectadas (1)
CWE
- CWE-125
Referencias
- https://git.kernel.org/stable/c/0406d746574e875d8778552eb674fcfbf5330bfb
- https://git.kernel.org/stable/c/04f612dc03427e0b1ac80a2611b5ac0ba93ac446
- https://git.kernel.org/stable/c/0970dd47726a57e52013594e9fbf667586eb3673
- https://git.kernel.org/stable/c/1a52a05471494546f955a58e8c170c0c796c52d5
- https://git.kernel.org/stable/c/7e7741c8315e4160aead00a60cdd6f81ab880717
- https://git.kernel.org/stable/c/889ca6000ac7fa73457b041848fcb08e0d51b809
- https://git.kernel.org/stable/c/f9654207e92283e0acac5d64fe5f8835383b5a23
JSON original (NVD)
Mostrar
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