CVE-2025-71118
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ACPICA: Avoid walking the Namespace if start_node is NULL
Although commit 0c9992315e73 ("ACPICA: Avoid walking the ACPI Namespace if it is not there") fixed the situation when both start_node and acpi_gbl_root_node are NULL, the Linux kernel mainline now still crashed on Honor Magicbook 14 Pro [1].
That happens due to the access to the member of parent_node in acpi_ns_get_next_node(). The NULL pointer dereference will always happen, no matter whether or not the start_node is equal to ACPI_ROOT_OBJECT, so move the check of start_node being NULL out of the if block.
Leer descripción completaMostrar menos
Unfortunately, all the attempts to contact Honor have failed, they refused to provide any technical support for Linux.
The bad DSDT table's dump could be found on GitHub [2].
DMI: HONOR FMB-P/FMB-P-PCB, BIOS 1.13 05/08/2025
[ rjw: Subject adjustment, changelog edits ]
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: 0.14%
- Percentil entre todas las CVEs puntuadas: 3
- 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
- CWE-476
Referencias
- https://git.kernel.org/stable/c/0d8bb08126920fd4b12dbf32d9250757c9064b36
- https://git.kernel.org/stable/c/1bc34293dfbd266c29875206849b4f8e8177e6df
- https://git.kernel.org/stable/c/7f9b951ed11842373851dd3c91860778356d62d3
- https://git.kernel.org/stable/c/9d6c58dae8f6590c746ac5d0012ffe14a77539f0
- https://git.kernel.org/stable/c/b84edef48cc8afb41150949a87dcfa81bc95b53e
- https://git.kernel.org/stable/c/ecb296286c8787895625bd4c53e9478db4ae139c
- https://git.kernel.org/stable/c/f91dad0a3b381244183ffbea4cec5a7a69d6f41e
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPICA: Avoid walking the Namespace if start_node is NULL\n\nAlthough commit 0c9992315e73 (\"ACPICA: Avoid walking the ACPI Namespace\nif it is not there\") fixed the situation when both start_node and\nacpi_gbl_root_node are NULL, the Linux kernel mainline now still crashed\non Honor Magicbook 14 Pro [1].\n\nThat happens due to the access to the member of parent_node in\nacpi_ns_get_next_node(). The NULL pointer dereference will always\nhappen, no matter whether or not the start_node is equal to\nACPI_ROOT_OBJECT, so move the check of start_node being NULL\nout of the if block.\n\nUnfortunately, all the attempts to contact Honor have failed, they\nrefused to provide any technical support for Linux.\n\nThe bad DSDT table's dump could be found on GitHub [2].\n\nDMI: HONOR FMB-P/FMB-P-PCB, BIOS 1.13 05/08/2025\n\n[ rjw: Subject adjustment, changelog edits ]"
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"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nACPICA: Evitar recorrer el Namespace si start_node es NULL\n\nAunque el commit 0c9992315e73 ('ACPICA: Evitar recorrer el ACPI Namespace si no está presente') arregló la situación cuando tanto start_node como acpi_gbl_root_node son NULL, la línea principal del kernel de Linux ahora todavía fallaba en Honor Magicbook 14 Pro [1].\n\nEso ocurre debido al acceso al miembro de parent_node en acpi_ns_get_next_node(). La desreferencia del puntero NULL siempre ocurrirá, sin importar si start_node es igual a ACPI_ROOT_OBJECT o no, así que mueva la comprobación de que start_node es NULL fuera del bloque if.\n\nDesafortunadamente, todos los intentos de contactar a Honor han fallado, se negaron a proporcionar cualquier soporte técnico para Linux.\n\nEl volcado de la tabla DSDT defectuosa se puede encontrar en GitHub [2].\n\nDMI: HONOR FMB-P/FMB-P-PCB, BIOS 1.13 05/08/2025\n\n[ rjw: Ajuste del asunto, ediciones del registro de cambios ]"
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