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CVE-2022-50044

Estado: AnalizadaMedia (4.7)—

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

net: qrtr: start MHI channel after endpoit creation

MHI channel may generates event/interrupt right after enabling. It may leads to 2 race conditions issues.

1) Such event may be dropped by qcom_mhi_qrtr_dl_callback() at check:

Because dev_set_drvdata(&mhi_dev->dev, qdev) may be not performed at this moment. In this situation qrtr-ns will be unable to enumerate services in device. ---------------------------------------------------------------

2) Such event may come at the moment after dev_set_drvdata() and before qrtr_endpoint_register(). In this case kernel will panic with accessing wrong pointer at qcom_mhi_qrtr_dl_callback():

Leer descripción completaMostrar menos

Because endpoint is not created yet. -------------------------------------------------------------- So move mhi_prepare_for_transfer_autoqueue after endpoint creation to fix it.

Detalles técnicos trazas, registros y código del informe original
	if (!qdev || mhi_res->transaction_status)
		return;

	rc = qrtr_endpoint_post(&qdev->ep, mhi_res->buf_addr,
				mhi_res->bytes_xferd);

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
{
  "id": "CVE-2022-50044",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.7,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1
      }
    ]
  },
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    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "a2e2cc0dbb1121dfa875da1c04f3dff966fec162",
              "lessThan": "c682fb70a7dfc25b848a4ff3a385b0471b470606",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a2e2cc0dbb1121dfa875da1c04f3dff966fec162",
              "lessThan": "a1a75f78a2937567946b1b756f82462874b5ca20",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "68a838b84effb7b57ba7d50b1863fc6ae35a54ce",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/qrtr/mhi.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
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            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.11",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.15.63",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "5.19.4",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/qrtr/mhi.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-06-18T11:15:32.897",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/68a838b84effb7b57ba7d50b1863fc6ae35a54ce",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a1a75f78a2937567946b1b756f82462874b5ca20",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c682fb70a7dfc25b848a4ff3a385b0471b470606",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: start MHI channel after endpoit creation\n\nMHI channel may generates event/interrupt right after enabling.\nIt may leads to 2 race conditions issues.\n\n1)\nSuch event may be dropped by qcom_mhi_qrtr_dl_callback() at check:\n\n\tif (!qdev || mhi_res->transaction_status)\n\t\treturn;\n\nBecause dev_set_drvdata(&mhi_dev->dev, qdev) may be not performed at\nthis moment. In this situation qrtr-ns will be unable to enumerate\nservices in device.\n---------------------------------------------------------------\n\n2)\nSuch event may come at the moment after dev_set_drvdata() and\nbefore qrtr_endpoint_register(). In this case kernel will panic with\naccessing wrong pointer at qcom_mhi_qrtr_dl_callback():\n\n\trc = qrtr_endpoint_post(&qdev->ep, mhi_res->buf_addr,\n\t\t\t\tmhi_res->bytes_xferd);\n\nBecause endpoint is not created yet.\n--------------------------------------------------------------\nSo move mhi_prepare_for_transfer_autoqueue after endpoint creation\nto fix it."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: qrtr: iniciar canal MHI después de la creación del endpoint El canal MHI puede generar un evento/interrupción justo después de habilitarse. Esto puede provocar dos problemas de condiciones de ejecución. 1) Dicho evento puede ser descartado por qcom_mhi_qrtr_dl_callback() en la comprobación: if (!qdev || mhi_res->transaction_status) return; Porque dev_set_drvdata(&mhi_dev->dev, qdev) puede no ejecutarse en este momento. En esta situación, qrtr-ns no podrá enumerar los servicios en el dispositivo. --------------------------------------------------------------- 2) Dicho evento puede ocurrir después de dev_set_drvdata() y antes de qrtr_endpoint_register(). En este caso, el kernel entrará en pánico al acceder al puntero incorrecto en qcom_mhi_qrtr_dl_callback(): rc = qrtr_endpoint_post(&qdev->ep, mhi_res->buf_addr, mhi_res->bytes_xferd); Porque el endpoint aún no se ha creado. -------------------------------------------------------------- Por lo tanto, mueva mhi_prepare_for_transfer_autoqueue después de la creación del endpoint para solucionarlo."
    }
  ],
  "lastModified": "2026-06-17T05:22:37.813",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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              "versionEndExcluding": "5.15.63",
              "versionStartIncluding": "5.11"
            },
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              "vulnerable": true,
              "matchCriteriaId": "0E669300-DA42-4ACD-86D8-68BE5F29FB88",
              "versionEndExcluding": "5.19.4",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E8BD11A3-8643-49B6-BADE-5029A0117325"
            }
          ],
          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}