CVE-2023-52996
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
@type being used as an array index, we need to prevent cpu speculation or risk leaking kernel memory content.
Detalles técnicos trazas, registros y código del informe original
if (!type)
continue;
if (type > RTAX_MAX)
return false;
...
fi_val = fi->fib_metrics->metrics[type - 1];CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.26%
- Percentil entre todas las CVEs puntuadas: 17
- 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).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/5e9398a26a92fc402d82ce1f97cc67d832527da0
- https://git.kernel.org/stable/c/7f9828fb1f688210e681268490576f0ca65c322a
- https://git.kernel.org/stable/c/8f0eb24f1a7a60ce635f0d757a46f1a37a4d467d
- https://git.kernel.org/stable/c/ca3cf947760de050d558293002ad3e7f4b8745d2
- https://git.kernel.org/stable/c/f9753ebd61be2d957b5504cbd3fd719674f05b7a
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: prevent potential spectre v1 gadget in fib_metrics_match()\n\nif (!type)\n continue;\n if (type > RTAX_MAX)\n return false;\n ...\n fi_val = fi->fib_metrics->metrics[type - 1];\n\n@type being used as an array index, we need to prevent\ncpu speculation or risk leaking kernel memory content."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv4: evitar un potencial gadget spectre v1 en fib_metrics_match() if (!type) continue; if (type > RTAX_MAX) return false; ... fi_val = fi->fib_metrics->metrics[type - 1]; @type se utiliza como un índice de matriz, debemos evitar la especulación de la CPU o corremos el riesgo de filtrar el contenido de la memoria del kernel."
}
],
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