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CVE-2024-49905

Estado: ModificadaMedia (5.5)—

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

drm/amd/display: Add null check for 'afb' in amdgpu_dm_plane_handle_cursor_update (v2)

This commit adds a null check for the 'afb' variable in the amdgpu_dm_plane_handle_cursor_update function. Previously, 'afb' was assumed to be null, but was used later in the code without a null check. This could potentially lead to a null pointer dereference.

Changes since v1: - Moved the null check for 'afb' to the line where 'afb' is used. (Alex)

Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1298 amdgpu_dm_plane_handle_cursor_update() error: we previously assumed 'afb' could be null (see line 1252)

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\ndrm/amd/display: Add null check for 'afb' in amdgpu_dm_plane_handle_cursor_update (v2)\n\nThis commit adds a null check for the 'afb' variable in the\namdgpu_dm_plane_handle_cursor_update function. Previously, 'afb' was\nassumed to be null, but was used later in the code without a null check.\nThis could potentially lead to a null pointer dereference.\n\nChanges since v1:\n- Moved the null check for 'afb' to the line where 'afb' is used. (Alex)\n\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1298 amdgpu_dm_plane_handle_cursor_update() error: we previously assumed 'afb' could be null (see line 1252)"
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: Agregar comprobación NULL para 'afb' en amdgpu_dm_plane_handle_cursor_update (v2) Esta confirmación agrega una comprobación NULL para la variable 'afb' en la función amdgpu_dm_plane_handle_cursor_update. Anteriormente, se suponía que 'afb' era nulo, pero se usó más adelante en el código sin una comprobación NULL. Esto podría conducir potencialmente a una desreferencia de puntero nulo. Cambios desde v1: - Se movió la comprobación NULL para 'afb' a la línea donde se usa 'afb'. (Alex) Corrige lo siguiente: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1298 Error amdgpu_dm_plane_handle_cursor_update(): anteriormente asumimos que 'afb' podía ser nulo (ver línea 1252)"
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  "lastModified": "2026-06-17T08:00:42.450",
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