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CVE-2019-19065

Estado: ModificadaMedia (4.7)—

** EN DISPUTA ** Una pérdida de memoria en la función sdma_init () en drivers / infiniband / hw / hfi1 / sdma.c en el kernel de Linux anterior a la versión 5.3.9 permite a los atacantes causar una denegación de servicio (consumo de memoria) al activar rhashtable_init ( ) fallos, también conocido como CID-34b3be18a04e. NOTA: Esto se ha discutido como no una vulnerabilidad porque "rhashtable_init () solo puede fallar si se pasan valores no válidos en la estructura del segundo parámetro, pero cuando se invoca desde sdma_init () es un puntero a una estructura de const estática, por lo que un atacante "solo podría provocar una fallo si pudieran dañar la memoria del núcleo (en cuyo caso una pequeña pérdida de memoria no es un problema importante)".

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 (3)

Canonical — Ubuntu LinuxLinux — Linux KernelOpensuse — Leap

CWE

Referencias

JSON original (NVD)

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      "value": "A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures, aka CID-34b3be18a04e. NOTE: This has been disputed as not a vulnerability because \"rhashtable_init() can only fail if it is passed invalid values in the second parameter's struct, but when invoked from sdma_init() that is a pointer to a static const struct, so an attacker could only trigger failure if they could corrupt kernel memory (in which case a small memory leak is not a significant problem)."
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