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CVE-2024-53056

Estado: ModificadaMedia (5.5)—

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

drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy()

In mtk_crtc_create(), if the call to mbox_request_channel() fails then we set the "mtk_crtc->cmdq_client.chan" pointer to NULL. In that situation, we do not call cmdq_pkt_create().

During the cleanup, we need to check if the "mtk_crtc->cmdq_client.chan" is NULL first before calling cmdq_pkt_destroy(). Calling cmdq_pkt_destroy() is unnecessary if we didn't call cmdq_pkt_create() and it will result in a NULL pointer dereference.

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/mediatek: Fix potential NULL dereference in mtk_crtc_destroy()\n\nIn mtk_crtc_create(), if the call to mbox_request_channel() fails then we\nset the \"mtk_crtc->cmdq_client.chan\" pointer to NULL.  In that situation,\nwe do not call cmdq_pkt_create().\n\nDuring the cleanup, we need to check if the \"mtk_crtc->cmdq_client.chan\"\nis NULL first before calling cmdq_pkt_destroy().  Calling\ncmdq_pkt_destroy() is unnecessary if we didn't call cmdq_pkt_create() and\nit will result in a NULL pointer dereference."
    },
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/mediatek: Se corrige la posible desreferenciación NULL en mtk_crtc_destroy() En mtk_crtc_create(), si la llamada a mbox_request_channel() falla, establecemos el puntero \"mtk_crtc->cmdq_client.chan\" en NULL. En esa situación, no llamamos a cmdq_pkt_create(). Durante la limpieza, debemos verificar si \"mtk_crtc->cmdq_client.chan\" es NULL primero antes de llamar a cmdq_pkt_destroy(). Llamar a cmdq_pkt_destroy() es innecesario si no llamamos a cmdq_pkt_create() y dará como resultado una desreferenciación del puntero NULL."
    }
  ],
  "lastModified": "2026-10-03T11:17:32.020",
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