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CVE-2022-49949

Estado: AnalizadaMedia (5.5)—

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

firmware_loader: Fix memory leak in firmware upload

In the case of firmware-upload, an instance of struct fw_upload is allocated in firmware_upload_register(). This data needs to be freed in fw_dev_release(). Create a new fw_upload_free() function in sysfs_upload.c to handle the firmware-upload specific memory frees and incorporate the missing kfree call for the fw_upload structure.

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-2022-49949",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "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
      }
    ]
  },
  "affected": [
    {
      "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": "97730bbb242cde22b7140acd202ffd88823886c9",
              "lessThan": "baf92485d111be828e1ab84a995515b604b938e5",
              "versionType": "git"
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            {
              "status": "affected",
              "version": "97730bbb242cde22b7140acd202ffd88823886c9",
              "lessThan": "789bba82f63c3e81dce426ba457fc7905b30ac6e",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/base/firmware_loader/sysfs.c",
            "drivers/base/firmware_loader/sysfs.h",
            "drivers/base/firmware_loader/sysfs_upload.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.19",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.19.8",
              "versionType": "semver",
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            },
            {
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/base/firmware_loader/sysfs.c",
            "drivers/base/firmware_loader/sysfs.h",
            "drivers/base/firmware_loader/sysfs_upload.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-06-18T11:15:21.947",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/789bba82f63c3e81dce426ba457fc7905b30ac6e",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/baf92485d111be828e1ab84a995515b604b938e5",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware_loader: Fix memory leak in firmware upload\n\nIn the case of firmware-upload, an instance of struct fw_upload is\nallocated in firmware_upload_register(). This data needs to be freed\nin fw_dev_release(). Create a new fw_upload_free() function in\nsysfs_upload.c to handle the firmware-upload specific memory frees\nand incorporate the missing kfree call for the fw_upload structure."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: firmware_loader: Se corrige una fuga de memoria durante la carga de firmware. En la carga de firmware, se asigna una instancia de la estructura fw_upload en firmware_upload_register(). Estos datos deben liberarse en fw_dev_release(). Cree una nueva función fw_upload_free() en sysfs_upload.c para gestionar las liberaciones de memoria específicas de la carga de firmware e incorpore la llamada kfree que falta para la estructura fw_upload."
    }
  ],
  "lastModified": "2026-06-17T05:19:36.243",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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}