CVE-2024-27038
Estado: ModificadaMedia (5.5)—
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: clk: corrige la desreferencia de clk_core_get NULL Es posible que clk_core_get elimine la referencia a un NULL en la siguiente secuencia: clk_core_get() of_clk_get_hw_from_clkspec() __of_clk_get_hw_from_provider() __clk_get_hw() __clk_get_hw() puede devolver NULL que es desreferenciado por clk_core_get() en hw->core. Antes de confirmar dde4eff47c82 ("clk: buscar padres con clk_lookups basado en clkdev") se realizó la verificación IS_ERR_OR_NULL() que habría detectado el NULL. Leyendo la descripción de esta función se habla de devolver NULL pero eso no puede ser así por el momento. Actualice la función para verificar hw antes de eliminar la referencia y devuelva NULL si hw es NULL.
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: 0.29%
- Percentil entre todas las CVEs puntuadas: 20
- Fecha de la puntuación: 8/10/2026
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 (2)
CWE
- CWE-476
Referencias
- https://git.kernel.org/stable/c/0efb9ef6fb95384ba631d6819e66f10392aabfa2
- https://git.kernel.org/stable/c/239174535dba11f7b83de0eaaa27909024f8c185
- https://git.kernel.org/stable/c/6f073b24a9e2becd25ac4505a9780a87e621bb51
- https://git.kernel.org/stable/c/a5d9b1aa61b401867b9066d54086b3e4ee91f8ed
- https://git.kernel.org/stable/c/a8b2b26fdd011ebe36d68a9a321ca45801685959
- https://git.kernel.org/stable/c/c554badcae9c45b737a22d23454170c6020b90e6
- https://git.kernel.org/stable/c/d7ae7d1265686b55832a445b1db8cdd69738ac07
- https://git.kernel.org/stable/c/e97fe4901e0f59a0bfd524578fe3768f8ca42428
- https://git.kernel.org/stable/c/0efb9ef6fb95384ba631d6819e66f10392aabfa2
- https://git.kernel.org/stable/c/239174535dba11f7b83de0eaaa27909024f8c185
- https://git.kernel.org/stable/c/6f073b24a9e2becd25ac4505a9780a87e621bb51
- https://git.kernel.org/stable/c/a5d9b1aa61b401867b9066d54086b3e4ee91f8ed
- https://git.kernel.org/stable/c/a8b2b26fdd011ebe36d68a9a321ca45801685959
- https://git.kernel.org/stable/c/c554badcae9c45b737a22d23454170c6020b90e6
- https://git.kernel.org/stable/c/d7ae7d1265686b55832a445b1db8cdd69738ac07
- https://git.kernel.org/stable/c/e97fe4901e0f59a0bfd524578fe3768f8ca42428
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: Fix clk_core_get NULL dereference\n\nIt is possible for clk_core_get to dereference a NULL in the following\nsequence:\n\nclk_core_get()\n of_clk_get_hw_from_clkspec()\n __of_clk_get_hw_from_provider()\n __clk_get_hw()\n\n__clk_get_hw() can return NULL which is dereferenced by clk_core_get() at\nhw->core.\n\nPrior to commit dde4eff47c82 (\"clk: Look for parents with clkdev based\nclk_lookups\") the check IS_ERR_OR_NULL() was performed which would have\ncaught the NULL.\n\nReading the description of this function it talks about returning NULL but\nthat cannot be so at the moment.\n\nUpdate the function to check for hw before dereferencing it and return NULL\nif hw is NULL."
},
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"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: clk: corrige la desreferencia de clk_core_get NULL Es posible que clk_core_get elimine la referencia a un NULL en la siguiente secuencia: clk_core_get() of_clk_get_hw_from_clkspec() __of_clk_get_hw_from_provider() __clk_get_hw() __clk_get_hw() puede devolver NULL que es desreferenciado por clk_core_get() en hw->core. Antes de confirmar dde4eff47c82 (\"clk: buscar padres con clk_lookups basado en clkdev\") se realizó la verificación IS_ERR_OR_NULL() que habría detectado el NULL. Leyendo la descripción de esta función se habla de devolver NULL pero eso no puede ser así por el momento. Actualice la función para verificar hw antes de eliminar la referencia y devuelva NULL si hw es NULL."
}
],
"lastModified": "2026-06-17T07:19:01.407",
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