CVE-2022-49852

Estado: AnalizadaAlta (7.1)—

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

riscv: process: fix kernel info leakage

thread_struct's s[12] may contain random kernel memory content, which may be finally leaked to userspace. This is a security hole. Fix it by clearing the s[12] array in thread_struct when fork.

As for kthread case, it's better to clear the s[12] array as well.

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: 10
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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1552.001 Credentials In Filescredential access75 %
Impacto secundarioT1499.004 Application or System Exploitationimpact40 %

Vulnerabilidad local (AV:L/PR:L) en kernel Linux que fuga información de kernel a userspace sin interacción. T1068 por escalada implícita; T1552.001 por lectura no autorizada de datos sensibles en memoria del kernel.

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

User Training Threat Intelligence Program Restrict File and Directory Permissions Password Policies Filter Network Traffic Execution Prevention

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

NVD-CWE-noinfo

Referencias

JSON original (NVD)

Mostrar

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