fkie_cve-2021-47523
Vulnerability from fkie_nvd
Published
2024-05-24 15:15
Modified
2024-11-21 06:36
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fix leak of rcvhdrtail_dummy_kvaddr This buffer is currently allocated in hfi1_init(): if (reinit) ret = init_after_reset(dd); else ret = loadtime_init(dd); if (ret) goto done; /* allocate dummy tail memory for all receive contexts */ dd->rcvhdrtail_dummy_kvaddr = dma_alloc_coherent(&dd->pcidev->dev, sizeof(u64), &dd->rcvhdrtail_dummy_dma, GFP_KERNEL); if (!dd->rcvhdrtail_dummy_kvaddr) { dd_dev_err(dd, "cannot allocate dummy tail memory\n"); ret = -ENOMEM; goto done; } The reinit triggered path will overwrite the old allocation and leak it. Fix by moving the allocation to hfi1_alloc_devdata() and the deallocation to hfi1_free_devdata().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2c08271f4ed0e24633b3f81ceff61052b9d45efc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60a8b5a1611b4a26de4839ab9c1fc2a9cf3e17c1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/834d0fb978643eaf09da425de197cc16a7c2761b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2c08271f4ed0e24633b3f81ceff61052b9d45efc
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/60a8b5a1611b4a26de4839ab9c1fc2a9cf3e17c1
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/834d0fb978643eaf09da425de197cc16a7c2761b
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/hfi1: Fix leak of rcvhdrtail_dummy_kvaddr\n\nThis buffer is currently allocated in hfi1_init():\n\n\tif (reinit)\n\t\tret = init_after_reset(dd);\n\telse\n\t\tret = loadtime_init(dd);\n\tif (ret)\n\t\tgoto done;\n\n\t/* allocate dummy tail memory for all receive contexts */\n\tdd-\u003ercvhdrtail_dummy_kvaddr = dma_alloc_coherent(\u0026dd-\u003epcidev-\u003edev,\n\t\t\t\t\t\t\t sizeof(u64),\n\t\t\t\t\t\t\t \u0026dd-\u003ercvhdrtail_dummy_dma,\n\t\t\t\t\t\t\t GFP_KERNEL);\n\n\tif (!dd-\u003ercvhdrtail_dummy_kvaddr) {\n\t\tdd_dev_err(dd, \"cannot allocate dummy tail memory\\n\");\n\t\tret = -ENOMEM;\n\t\tgoto done;\n\t}\n\nThe reinit triggered path will overwrite the old allocation and leak it.\n\nFix by moving the allocation to hfi1_alloc_devdata() and the deallocation\nto hfi1_free_devdata()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: IB/hfi1: Correcci\u00f3n de fuga de rcvhdrtail_dummy_kvaddr. Este b\u00fafer est\u00e1 actualmente asignado en hfi1_init(): if (reinit) ret = init_after_reset(dd); de lo contrario ret = loadtime_init(dd); si (ret) ir a hecho; /* asigna memoria de cola ficticia para todos los contextos de recepci\u00f3n */ dd-\u0026gt;rcvhdrtail_dummy_kvaddr = dma_alloc_coherent(\u0026amp;dd-\u0026gt;pcidev-\u0026gt;dev, sizeof(u64), \u0026amp;dd-\u0026gt;rcvhdrtail_dummy_dma, GFP_KERNEL); if (!dd-\u0026gt;rcvhdrtail_dummy_kvaddr) { dd_dev_err(dd, \"no se puede asignar memoria de cola ficticia\\n\"); ret = -ENOMEM; ir a hacer; } La ruta activada por reinicio sobrescribir\u00e1 la asignaci\u00f3n anterior y la filtrar\u00e1. Para solucionarlo, mueva la asignaci\u00f3n a hfi1_alloc_devdata() y la desasignaci\u00f3n a hfi1_free_devdata()."
    }
  ],
  "id": "CVE-2021-47523",
  "lastModified": "2024-11-21T06:36:26.670",
  "metrics": {},
  "published": "2024-05-24T15:15:14.743",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2c08271f4ed0e24633b3f81ceff61052b9d45efc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/60a8b5a1611b4a26de4839ab9c1fc2a9cf3e17c1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/834d0fb978643eaf09da425de197cc16a7c2761b"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/2c08271f4ed0e24633b3f81ceff61052b9d45efc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/60a8b5a1611b4a26de4839ab9c1fc2a9cf3e17c1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/834d0fb978643eaf09da425de197cc16a7c2761b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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