CVE-2023-3640

Gravedad CVSS v3.1:

ALTA

Tipo:

No Disponible / Otro tipo

Fecha de publicación:

24/07/2023

Última modificación:

15/04/2025

Descripción

*** Pendiente de traducción *** A possible unauthorized memory access flaw was found in the Linux kernel&#39;s cpu_entry_area mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the &#39;Randomize per-cpu entry area&#39; feature was implemented in /arch/x86/mm/cpu_entry_area.c, which works through the init_cea_offsets() function when KASLR is enabled. However, despite this feature, there is still a risk of per-cpu entry area leaks. This issue could allow a local user to gain access to some important data with memory in an expected location and potentially escalate their privileges on the system.

Impacto

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severidad y Métricas:

Puntuación base: 7.00 ALTA
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Vector de acceso (AV): Local
Complejidad de acceso (AC): Alto
Privilegios Requeridos (PR): Bajo
Interacción del usuario (UI): Ninguno
Alcance (S): Sin modificar
Impacto a la confidencialidad (C): Alto
Impacto a la integridad (I): Alto
Impacto a la disponibilidad (A): Alto