CVE-2025-68343 (GCVE-0-2025-68343)

Vulnerability from cvelistv5 – Published: 2025-12-23 13:58 – Updated: 2026-05-11 21:51
VLAI
Title
can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header
Summary
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 18cbce43363c9f84b90a92d57df341155eee0697 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 3433680b759646efcacc64fe36aa2e51ae34b8f0 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 616eee3e895b8ca0028163fcb1dce5e3e9dea322 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < f31693dc3a584c0ad3937e857b59dbc1a7ed2b87 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 6fe9f3279f7d2518439a7962c5870c6e9ecbadcf (git)
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Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.119 , ≤ 6.6.* (semver)
Unaffected: 6.12.61 , ≤ 6.12.* (semver)
Unaffected: 6.17.11 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
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          "vendor": "Linux",
          "versions": [
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              "versionType": "semver"
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              "versionType": "semver"
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              "versionType": "semver"
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              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "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-\u003eparent-\u003ehf_size_rx\" but use \"parent-\u003ehf_size_rx\" instead. Since\n\"urb-\u003econtext\" contains \"parent\", it is always defined, while \"dev\" is not\ndefined if the URB it too short."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:51:21.788Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
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          "url": "https://git.kernel.org/stable/c/6fe9f3279f7d2518439a7962c5870c6e9ecbadcf"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68343",
    "datePublished": "2025-12-23T13:58:28.411Z",
    "dateReserved": "2025-12-16T14:48:05.298Z",
    "dateUpdated": "2026-05-11T21:51:21.788Z",
    "state": "PUBLISHED"
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      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68343.json",
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            "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-\u003eparent-\u003ehf_size_rx\" but use \"parent-\u003ehf_size_rx\" instead. Since\n\"urb-\u003econtext\" contains \"parent\", it is always defined, while \"dev\" is not\ndefined if the URB it too short."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha corregido la siguiente vulnerabilidad:\\n\\ncan: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header\\n\\nEl controlador espera recibir una struct gs_host_frame en gs_usb_receive_bulk_callback().\\n\\nUtilizar struct_group para describir la cabecera de la struct gs_host_frame y comprobar que se ha recibido al menos la cabecera antes de acceder a cualquiera de sus miembros.\\n\\nPara volver a enviar el URB, no desreferenciar la cadena de punteros \\\u201cdev -\u003e parent -\u003e hf_size_rx\\\u201d sino usar \\\u201cparent -\u003e hf_size_rx\\\u201d en su lugar. Dado que \\\u201curb -\u003e context\\\u201d contiene \\\u201cparent\\\u201d, siempre est\u00e1 definido, mientras que \\\u201cdev\\\u201d no est\u00e1 definido si el URB es demasiado corto."
          }
        ],
        "id": "CVE-2025-68343",
        "lastModified": "2026-10-19T21:10:00.160",
        "metrics": {},
        "published": "2025-12-23T14:16:40.913",
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        "vulnStatus": "Deferred"
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}



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