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CVE-2024-49911

Estado: ModificadaMedia (5.5)—

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

drm/amd/display: Add NULL check for function pointer in dcn20_set_output_transfer_func

This commit adds a null check for the set_output_gamma function pointer in the dcn20_set_output_transfer_func function. Previously, set_output_gamma was being checked for null at line 1030, but then it was being dereferenced without any null check at line 1048. This could potentially lead to a null pointer dereference error if set_output_gamma is null.

To fix this, we now ensure that set_output_gamma is not null before dereferencing it. We do this by adding a null check for set_output_gamma before the call to set_output_gamma at line 1048.

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)

Mostrar
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  "published": "2024-10-21T18:15:13.507",
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add NULL check for function pointer in dcn20_set_output_transfer_func\n\nThis commit adds a null check for the set_output_gamma function pointer\nin the dcn20_set_output_transfer_func function. Previously,\nset_output_gamma was being checked for null at line 1030, but then it\nwas being dereferenced without any null check at line 1048. This could\npotentially lead to a null pointer dereference error if set_output_gamma\nis null.\n\nTo fix this, we now ensure that set_output_gamma is not null before\ndereferencing it. We do this by adding a null check for set_output_gamma\nbefore the call to set_output_gamma at line 1048."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: Agregar comprobación NULL para el puntero de función en dcn20_set_output_transfer_func Esta confirmación agrega una comprobación NULL para el puntero de función set_output_gamma en la función dcn20_set_output_transfer_func. Anteriormente, se estaba comprobando que set_output_gamma no fuera nulo en la línea 1030, pero luego se estaba desreferenciando sin ninguna comprobación NULL en la línea 1048. Esto podría conducir potencialmente a un error de desreferencia de puntero nulo si set_output_gamma es nulo. Para solucionar esto, ahora nos aseguramos de que set_output_gamma no sea nulo antes de desreferenciarlo. Hacemos esto agregando una comprobación NULL para set_output_gamma antes de la llamada a set_output_gamma en la línea 1048."
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  "lastModified": "2026-06-17T08:00:43.153",
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