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CVE-2022-50568

Estado: AplazadaSin puntuar—

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

usb: gadget: f_hid: fix f_hidg lifetime vs cdev

The embedded struct cdev does not have its lifetime correctly tied to the enclosing struct f_hidg, so there is a use-after-free if /dev/hidgN is held open while the gadget is deleted.

This can readily be replicated with libusbgx's example programs (for conciseness - operating directly via configfs is equivalent):

Pull the existing device up in to struct f_hidg and make use of the cdev_device_{add,del}() helpers. This changes the lifetime of the device object to match struct f_hidg, but note that it is still added and deleted at the same time.

Detalles técnicos trazas, registros y código del informe original
	gadget-hid
	exec 3<> /dev/hidg0
	gadget-vid-pid-remove
	exec 3<&-

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

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)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-50568",
  "cveTags": [],
  "metrics": {},
  "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": "71adf118946957839a13aa4d1094183e05c6c094",
              "lessThan": "1cd7f156f6389918f760687fbbf133c86da93162",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "71adf118946957839a13aa4d1094183e05c6c094",
              "lessThan": "c78c87c4e389b62f8892af7f59857447aa6d9797",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "71adf118946957839a13aa4d1094183e05c6c094",
              "lessThan": "1b6a53e447ec3d81623610c8c7ec5082b47dfdce",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "71adf118946957839a13aa4d1094183e05c6c094",
              "lessThan": "d3136b79705c2e3bba9c76adc5628af0215d798e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "71adf118946957839a13aa4d1094183e05c6c094",
              "lessThan": "9e4b85d815b14bd4db2deea2a54264a23de8b896",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "71adf118946957839a13aa4d1094183e05c6c094",
              "lessThan": "9e08b7f5fa00e9d550851352bd0d1ba74ccffef2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "71adf118946957839a13aa4d1094183e05c6c094",
              "lessThan": "89ff3dfac604614287ad5aad9370c3f984ea3f4b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/usb/gadget/function/f_hid.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.35"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.35",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/usb/gadget/function/f_hid.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-10-22T14:15:41.657",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1b6a53e447ec3d81623610c8c7ec5082b47dfdce",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1cd7f156f6389918f760687fbbf133c86da93162",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/89ff3dfac604614287ad5aad9370c3f984ea3f4b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9e08b7f5fa00e9d550851352bd0d1ba74ccffef2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9e4b85d815b14bd4db2deea2a54264a23de8b896",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c78c87c4e389b62f8892af7f59857447aa6d9797",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d3136b79705c2e3bba9c76adc5628af0215d798e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_hid: fix f_hidg lifetime vs cdev\n\nThe embedded struct cdev does not have its lifetime correctly tied to\nthe enclosing struct f_hidg, so there is a use-after-free if /dev/hidgN\nis held open while the gadget is deleted.\n\nThis can readily be replicated with libusbgx's example programs (for\nconciseness - operating directly via configfs is equivalent):\n\n\tgadget-hid\n\texec 3<> /dev/hidg0\n\tgadget-vid-pid-remove\n\texec 3<&-\n\nPull the existing device up in to struct f_hidg and make use of the\ncdev_device_{add,del}() helpers.  This changes the lifetime of the\ndevice object to match struct f_hidg, but note that it is still added\nand deleted at the same time."
    }
  ],
  "lastModified": "2026-06-17T05:23:48.470",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}