CVE-2022-49503
Estado: AnalizadaAlta (7.1)—
In the Linux kernel, the following vulnerability has been resolved:
ath9k_htc: fix potential out of bounds access with invalid rxstatus->rs_keyix
The "rxstatus->rs_keyix" eventually gets passed to test_bit() so we need to ensure that it is within the bitmap.
drivers/net/wireless/ath/ath9k/common.c:46 ath9k_cmn_rx_accept() error: passing untrusted data 'rx_stats->rs_keyix' to 'test_bit()'
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: 0.28%
- Percentil entre todas las CVEs puntuadas: 19
- 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
T1068Exploitation for Privilege Escalationprivilege escalation85 % - Impacto principal
T1059Command and Scripting Interpreterexecution70 % - Impacto secundario
T1499.004Application or System Exploitationimpact60 %
Acceso local (AV:L) sin interacción de usuario permite leer datos no validados en el kernel (CWE-125). El out-of-bounds en test_bit() puede causar ejecución o DoS; la vulnerabilidad afecta ath9k_htc tras validación fallida de rs_keyix.
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/0bcb528402cd5e1a6e1833e956fd58a12d509e8e
- https://git.kernel.org/stable/c/2326d398ccd41ba6d93b8346532dfa432ab00fee
- https://git.kernel.org/stable/c/2dc509305cf956381532792cb8dceef2b1504765
- https://git.kernel.org/stable/c/3dad3fed5672828c7fb0465cb66a3d9a70952fa6
- https://git.kernel.org/stable/c/461e4c1f199076275f16bf6f3d3e42c6b6c79f33
- https://git.kernel.org/stable/c/4bdcf32c965c27f55ccc4ee71c1927131115b0bb
- https://git.kernel.org/stable/c/7f6defe0fabc79f29603c6fa3c80e4fe0456a3e9
- https://git.kernel.org/stable/c/a048e0c3caa852397b7b50d4c82a0415c05f7ac3
- https://git.kernel.org/stable/c/eda518db7db16c360bc84379d90675650daa3048
JSON original (NVD)
Mostrar
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ath9k_htc: se corrige el posible acceso fuera de los límites con rxstatus->rs_keyix no válido. \"rxstatus->rs_keyix\" finalmente se pasa a test_bit(), por lo que debemos asegurarnos de que esté dentro del mapa de bits. drivers/net/wireless/ath/ath9k/common.c:46 Error ath9k_cmn_rx_accept(): se pasan datos no confiables 'rx_stats->rs_keyix' a 'test_bit()'"
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