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CVE-2024-50113

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

firewire: core: fix invalid port index for parent device

In a commit 24b7f8e5cd65 ("firewire: core: use helper functions for self ID sequence"), the enumeration over self ID sequence was refactored with some helper functions with KUnit tests. These helper functions are guaranteed to work expectedly by the KUnit tests, however their application includes a mistake to assign invalid value to the index of port connected to parent device.

This bug affects the case that any extra node devices which has three or more ports are connected to 1394 OHCI controller.

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In the case, the path to update the tree cache could hits WARN_ON(), and gets general protection fault due to the access to invalid address computed by the invalid value.

This commit fixes the bug to assign correct port index.

CVSS

Probabilidad de explotación (EPSS)

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)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirewire: core: fix invalid port index for parent device\n\nIn a commit 24b7f8e5cd65 (\"firewire: core: use helper functions for self\nID sequence\"), the enumeration over self ID sequence was refactored with\nsome helper functions with KUnit tests. These helper functions are\nguaranteed to work expectedly by the KUnit tests, however their application\nincludes a mistake to assign invalid value to the index of port connected\nto parent device.\n\nThis bug affects the case that any extra node devices which has three or\nmore ports are connected to 1394 OHCI controller. In the case, the path\nto update the tree cache could hits WARN_ON(), and gets general protection\nfault due to the access to invalid address computed by the invalid value.\n\nThis commit fixes the bug to assign correct port index."
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      "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: firewire: core: fix invalid port index for parent device En una confirmación 24b7f8e5cd65 (\"firewire: core: use helper functions for self ID sequence\"), la enumeración sobre la secuencia de auto-identificación se refactorizó con algunas funciones auxiliares con pruebas KUnit. Se garantiza que estas funciones auxiliares funcionarán como se espera mediante las pruebas KUnit, sin embargo, su aplicación incluye un error para asignar un valor no válido al índice del puerto conectado al dispositivo principal. Este error afecta al caso en que cualquier dispositivo de nodo adicional que tenga tres o más puertos esté conectado al controlador 1394 OHCI. En el caso, la ruta para actualizar la caché del árbol podría alcanzar WARN_ON() y obtener un fallo de protección general debido al acceso a una dirección no válida calculada por el valor no válido. Esta confirmación corrige el error para asignar el índice de puerto correcto."
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