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CVE-2022-50138

Estado: AnalizadaMedia (5.5)—

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

RDMA/qedr: Fix potential memory leak in __qedr_alloc_mr()

__qedr_alloc_mr() allocates a memory chunk for "mr->info.pbl_table" with init_mr_info(). When rdma_alloc_tid() and rdma_register_tid() fail, "mr" is released while "mr->info.pbl_table" is not released, which will lead to a memory leak.

We should release the "mr->info.pbl_table" with qedr_free_pbl() when error occurs to fix the memory leak.

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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  "id": "CVE-2022-50138",
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          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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  "published": "2025-06-18T11:15:43.733",
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      "description": [
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          "value": "CWE-401"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/qedr: Fix potential memory leak in __qedr_alloc_mr()\n\n__qedr_alloc_mr() allocates a memory chunk for \"mr->info.pbl_table\" with\ninit_mr_info(). When rdma_alloc_tid() and rdma_register_tid() fail, \"mr\"\nis released while \"mr->info.pbl_table\" is not released, which will lead\nto a memory leak.\n\nWe should release the \"mr->info.pbl_table\" with qedr_free_pbl() when error\noccurs to fix the memory leak."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/qedr: Se corrige una posible fuga de memoria en __qedr_alloc_mr(). __qedr_alloc_mr() asigna un fragmento de memoria para \"mr->info.pbl_table\" con init_mr_info(). Cuando fallan rdma_alloc_tid() y rdma_register_tid(), se libera \"mr\" mientras que \"mr->info.pbl_table\" no, lo que provoca una fuga de memoria. Deberíamos liberar \"mr->info.pbl_table\" con qedr_free_pbl() cuando se produzca el error para corregir la fuga de memoria."
    }
  ],
  "lastModified": "2026-06-17T05:22:50.170",
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