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CVE-2025-68343

Estado: AplazadaSin puntuar—

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

can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header

The driver expects to receive a struct gs_host_frame in gs_usb_receive_bulk_callback().

Use struct_group to describe the header of the struct gs_host_frame and check that we have at least received the header before accessing any members of it.

To resubmit the URB, do not dereference the pointer chain "dev->parent->hf_size_rx" but use "parent->hf_size_rx" instead. Since "urb->context" contains "parent", it is always defined, while "dev" is not defined if the URB it too short.

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)

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{
  "id": "CVE-2025-68343",
  "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": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "lessThan": "18cbce43363c9f84b90a92d57df341155eee0697",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "lessThan": "3433680b759646efcacc64fe36aa2e51ae34b8f0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "lessThan": "616eee3e895b8ca0028163fcb1dce5e3e9dea322",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "lessThan": "f31693dc3a584c0ad3937e857b59dbc1a7ed2b87",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "lessThan": "6fe9f3279f7d2518439a7962c5870c6e9ecbadcf",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.16"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.16",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.119",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.61",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.11",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-23T14:16:40.913",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/18cbce43363c9f84b90a92d57df341155eee0697",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3433680b759646efcacc64fe36aa2e51ae34b8f0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/616eee3e895b8ca0028163fcb1dce5e3e9dea322",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6fe9f3279f7d2518439a7962c5870c6e9ecbadcf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f31693dc3a584c0ad3937e857b59dbc1a7ed2b87",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header\n\nThe driver expects to receive a struct gs_host_frame in\ngs_usb_receive_bulk_callback().\n\nUse struct_group to describe the header of the struct gs_host_frame and\ncheck that we have at least received the header before accessing any\nmembers of it.\n\nTo resubmit the URB, do not dereference the pointer chain\n\"dev->parent->hf_size_rx\" but use \"parent->hf_size_rx\" instead. Since\n\"urb->context\" contains \"parent\", it is always defined, while \"dev\" is not\ndefined if the URB it too short."
    }
  ],
  "lastModified": "2026-06-17T09:58:58.283",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}