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CVE-2024-57890

Estado: ModificadaMedia (5.5)—

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

RDMA/uverbs: Prevent integer overflow issue

In the expression "cmd.wqe_size * cmd.wr_count", both variables are u32 values that come from the user so the multiplication can lead to integer wrapping. Then we pass the result to uverbs_request_next_ptr() which also could potentially wrap. The "cmd.sge_count * sizeof(struct ib_uverbs_sge)" multiplication can also overflow on 32bit systems although it's fine on 64bit systems.

This patch does two things. First, I've re-arranged the condition in uverbs_request_next_ptr() so that the use controlled variable "len" is on one side of the comparison by itself without any math. Then I've modified all the callers to use size_mul() for the multiplications.

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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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/uverbs: Prevent integer overflow issue\n\nIn the expression \"cmd.wqe_size * cmd.wr_count\", both variables are u32\nvalues that come from the user so the multiplication can lead to integer\nwrapping.  Then we pass the result to uverbs_request_next_ptr() which also\ncould potentially wrap.  The \"cmd.sge_count * sizeof(struct ib_uverbs_sge)\"\nmultiplication can also overflow on 32bit systems although it's fine on\n64bit systems.\n\nThis patch does two things.  First, I've re-arranged the condition in\nuverbs_request_next_ptr() so that the use controlled variable \"len\" is on\none side of the comparison by itself without any math.  Then I've modified\nall the callers to use size_mul() for the multiplications."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/uverbs: Evitar problema de desbordamiento de enteros En la expresión \"cmd.wqe_size * cmd.wr_count\", ambas variables son valores u32 que provienen del usuario, por lo que la multiplicación puede provocar un encapsulamiento de enteros. Luego, pasamos el resultado a uverbs_request_next_ptr(), que también podría potencialmente encapsularse. La multiplicación \"cmd.sge_count * sizeof(struct ib_uverbs_sge)\" también puede desbordarse en sistemas de 32 bits, aunque está bien en sistemas de 64 bits. Este parche hace dos cosas. Primero, he reorganizado la condición en uverbs_request_next_ptr() para que la variable controlada por uso \"len\" esté en un lado de la comparación por sí misma sin ningún cálculo. Luego, he modificado todos los llamadores para usar size_mul() para las multiplicaciones."
    }
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  "lastModified": "2026-06-17T08:14:09.430",
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