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CVE-2022-49678

Estado: ModificadaMedia (5.5)—

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

soc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm_probe

of_find_matching_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.

In brcmstb_init_sram, it pass dn to of_address_to_resource(), of_address_to_resource() will call of_find_device_by_node() to take reference, so we should release the reference returned by of_find_matching_node().

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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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm_probe\n\nof_find_matching_node() returns a node pointer with refcount\nincremented, we should use of_node_put() on it when not need anymore.\nAdd missing of_node_put() to avoid refcount leak.\n\nIn brcmstb_init_sram, it pass dn to of_address_to_resource(),\nof_address_to_resource() will call of_find_device_by_node() to take\nreference, so we should release the reference returned by\nof_find_matching_node()."
    },
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: soc: bcm: brcmstb: pm: pm-arm: Se corrige la pérdida de refcount en brcmstb_pm_probe of_find_matching_node() devuelve un puntero de nodo con refcount incrementado, deberíamos usar of_node_put() en él cuando ya no lo necesitemos. Agrega of_node_put() faltante para evitar la pérdida de refcount. En brcmstb_init_sram, pasa dn a of_address_to_resource(), of_address_to_resource() llamará a of_find_device_by_node() para tomar la referencia, por lo que deberíamos liberar la referencia devuelta por of_find_matching_node()."
    }
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