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CVE-2023-1829

Estado: ModificadaAlta (7.8)—PoC
Gravedad7.8Alta · CVSS 3.1
Probabilidad de explotación1.06 %mayor que el 64 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePrueba de concepto en GitHub (no verificada)

Una vulnerabilidad de uso tras liberación (use-after-free) en el filtro de índice de control de tráfico (tcindex) del kernel de Linux puede explotarse para conseguir una escalada de privilegios local. La función tcindex_delete no desactiva correctamente los filtros en el caso de tablas hash perfectas al eliminar la estructura subyacente, lo que posteriormente puede provocar una doble liberación de la estructura. Un usuario local malintencionado puede aprovechar esta vulnerabilidad para elevar sus privilegios a root.

Recomendamos actualizar a una versión posterior al commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ .

Traducción automática del texto original de NVD (en inglés).

CVSS

Puntuación base
7.8
Versión
3.1
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
1.06 %
Percentil entre todas las CVEs puntuadas
64
Fecha de la puntuación
20/10/2026

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).

Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

Mostrar las 10 referencias

JSON original (NVD)

Mostrar
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