CVE-2022-49145
Estado: AnalizadaAlta (7.1)—
In the Linux kernel, the following vulnerability has been resolved:
ACPI: CPPC: Avoid out of bounds access when parsing _CPC data
If the NumEntries field in the _CPC return package is less than 2, do not attempt to access the "Revision" element of that package, because it may not be present then.
BugLink: https://lore.kernel.org/lkml/20220322143534.GC32582@xsang-OptiPlex-9020/
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: 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 escalation85 % - Impacto principal
T1059Command and Scripting Interpreterexecution70 %
Acceso local (AV:L/PR:L) sin interacción del usuario explotar buffer underread en parsing _CPC; impacto en ejecución de código por lectura de memoria fuera de límites.
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/28d5387c1994f5e1e0d41b30a1f3dd6e1f609252
- https://git.kernel.org/stable/c/40d8abf364bcab23bc715a9221a3c8623956257b
- https://git.kernel.org/stable/c/97b5593fd1b182b3fdb180b6bbe64ec09669988b
- https://git.kernel.org/stable/c/b3f15609ffa521de12244cd6af24002030dda3f5
- https://git.kernel.org/stable/c/b80b19b32a432c9eee1cd200ef7aaddf608f54d1
- https://git.kernel.org/stable/c/cb249f8c00f40dba83b7da8207ac14ca46e9ec9e
- https://git.kernel.org/stable/c/d208ea44e25b31db5a4d5e8c31df51787a3e9303
- https://git.kernel.org/stable/c/d7339f2a3938fb56b5f28d53f5345900b5fa0e74
- https://git.kernel.org/stable/c/e5b681822cac1f8093759b02e16c06b2c64b6788
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: CPPC: Avoid out of bounds access when parsing _CPC data\n\nIf the NumEntries field in the _CPC return package is less than 2, do\nnot attempt to access the \"Revision\" element of that package, because\nit may not be present then.\n\nBugLink: https://lore.kernel.org/lkml/20220322143534.GC32582@xsang-OptiPlex-9020/"
},
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: CPPC: evitar el acceso fuera de los límites al analizar datos _CPC Si el campo NumEntries en el paquete de retorno _CPC es menor que 2, no intente acceder al elemento \"Revisión\" de ese paquete, porque es posible que no esté presente en ese momento. Enlace de error: https://lore.kernel.org/lkml/20220322143534.GC32582@xsang-OptiPlex-9020/"
}
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