FKIE_CVE-2025-68342

Vulnerability from fkie_nvd - Published: 2025-12-23 14:16 - Updated: 2026-10-30 13:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing data The URB received in gs_usb_receive_bulk_callback() contains a struct gs_host_frame. The length of the data after the header depends on the gs_host_frame hf::flags and the active device features (e.g. time stamping). Introduce a new function gs_usb_get_minimum_length() and check that we have at least received the required amount of data before accessing it. Only copy the data to that skb that has actually been received. [mkl: rename gs_usb_get_minimum_length() -> +gs_usb_get_minimum_rx_length()]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/395d988f93861101ec89d0dd9e3b876ae9392a5b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4ffac725154cf6a253f5e6aa0c8946232b6a0af5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8376208db9283fbdfaa06c8d80735ac9954fa64a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad55004a3cb5b41ef78aa6c09e7bc5a489ba652b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fb0c7c77a7ae3a2c3404b7d0173b8739a754b513
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8376208db9283fbdfaa06c8d80735ac9954fa64a",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "4ffac725154cf6a253f5e6aa0c8946232b6a0af5",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "ad55004a3cb5b41ef78aa6c09e7bc5a489ba652b",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "fb0c7c77a7ae3a2c3404b7d0173b8739a754b513",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "395d988f93861101ec89d0dd9e3b876ae9392a5b",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.16"
            },
            {
              "lessThan": "3.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.119",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.61",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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 data\n\nThe URB received in gs_usb_receive_bulk_callback() contains a struct\ngs_host_frame. The length of the data after the header depends on the\ngs_host_frame hf::flags and the active device features (e.g. time\nstamping).\n\nIntroduce a new function gs_usb_get_minimum_length() and check that we have\nat least received the required amount of data before accessing it. Only\ncopy the data to that skb that has actually been received.\n\n[mkl: rename gs_usb_get_minimum_length() -\u003e +gs_usb_get_minimum_rx_length()]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\n\ncan: gs_usb: gs_usb_receive_bulk_callback(): comprobar actual_length antes de acceder a los datos\n\nEl URB recibido en \u0027gs_usb_receive_bulk_callback()\u0027 contiene una estructura \u0027gs_host_frame\u0027. La longitud de los datos despu\u00e9s de la cabecera depende de los \u0027hf::flags\u0027 de \u0027gs_host_frame\u0027 y de las caracter\u00edsticas activas del dispositivo (por ejemplo, el sellado de tiempo).\n\nSe introduce una nueva funci\u00f3n \u0027gs_usb_get_minimum_length()\u0027 y se comprueba que se ha recibido al menos la cantidad de datos requerida antes de acceder a ellos. Solo se copian al \u0027skb\u0027 los datos que realmente se han recibido.\n\n[mkl: se renombra \u0027gs_usb_get_minimum_length()\u0027 a \u0027+gs_usb_get_minimum_rx_length()\u0027]"
    }
  ],
  "id": "CVE-2025-68342",
  "lastModified": "2026-10-30T13:18:21.553",
  "metrics": {},
  "published": "2025-12-23T14:16:40.810",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/395d988f93861101ec89d0dd9e3b876ae9392a5b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4ffac725154cf6a253f5e6aa0c8946232b6a0af5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8376208db9283fbdfaa06c8d80735ac9954fa64a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ad55004a3cb5b41ef78aa6c09e7bc5a489ba652b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fb0c7c77a7ae3a2c3404b7d0173b8739a754b513"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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