CVE-2024-56683
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
drm/vc4: hdmi: Avoid hang with debug registers when suspended
Trying to read /sys/kernel/debug/dri/1/hdmi1_regs when the hdmi is disconnected results in a fatal system hang.
This is due to the pm suspend code disabling the dvp clock. That is just a gate of the 108MHz clock in DVP_HT_RPI_MISC_CONFIG, which results in accesses hanging AXI bus.
Protect against this.
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: 0.22%
- Percentil entre todas las CVEs puntuadas: 12
- 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/0ea29bd7d9400d3629683244d609358ed1b12075
- https://git.kernel.org/stable/c/16f351adf733a182224ad24916d7673aa6df02df
- https://git.kernel.org/stable/c/223ee2567a55e4f80315c768d2969e6a3b9fb23d
- https://git.kernel.org/stable/c/74f21be9990a42dc2357bcf87a13e16c6998b90e
- https://git.kernel.org/stable/c/c7d474974954d9af7e0092021223d58f2de128df
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vc4: hdmi: Avoid hang with debug registers when suspended\n\nTrying to read /sys/kernel/debug/dri/1/hdmi1_regs\nwhen the hdmi is disconnected results in a fatal system hang.\n\nThis is due to the pm suspend code disabling the dvp clock.\nThat is just a gate of the 108MHz clock in DVP_HT_RPI_MISC_CONFIG,\nwhich results in accesses hanging AXI bus.\n\nProtect against this."
},
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/vc4: hdmi: evitar el bloqueo con registros de depuración cuando está suspendido Intentar leer /sys/kernel/debug/dri/1/hdmi1_regs cuando el hdmi está desconectado da como resultado un bloqueo fatal del sistema. Esto se debe a que el código de suspensión pm deshabilita el reloj dvp. Eso es solo una compuerta del reloj de 108 MHz en DVP_HT_RPI_MISC_CONFIG, lo que da como resultado accesos que bloquean el bus AXI. Protéjase contra esto."
}
],
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