github - ghsa-2f36-x8xr-4642

GHSA-2F36-X8XR-4642

Vulnerability from github – Published: 2025-12-23 15:30 – Updated: 2025-12-23 15:30

Details

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()]

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68342"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-23T14:16:40Z",
    "severity": null
  },
  "details": "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()]",
  "id": "GHSA-2f36-x8xr-4642",
  "modified": "2025-12-23T15:30:40Z",
  "published": "2025-12-23T15:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68342"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/395d988f93861101ec89d0dd9e3b876ae9392a5b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ffac725154cf6a253f5e6aa0c8946232b6a0af5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad55004a3cb5b41ef78aa6c09e7bc5a489ba652b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb0c7c77a7ae3a2c3404b7d0173b8739a754b513"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68342 (GCVE-0-2025-68342)

Vulnerability from cvelistv5 – Published: 2025-12-23 13:58 – Updated: 2025-12-23 13:58

Title

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

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()]

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/4ffac725154cf6a25…
	https://git.kernel.org/stable/c/ad55004a3cb5b41ef…
	https://git.kernel.org/stable/c/fb0c7c77a7ae3a2c3…
	https://git.kernel.org/stable/c/395d988f93861101e…

Impacted products

Vendor

Product

Version

Linux

Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 4ffac725154cf6a253f5e6aa0c8946232b6a0af5 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < ad55004a3cb5b41ef78aa6c09e7bc5a489ba652b (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < fb0c7c77a7ae3a2c3404b7d0173b8739a754b513 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 395d988f93861101ec89d0dd9e3b876ae9392a5b (git)

Linux

Affected: 3.16
Unaffected: 0 , < 3.16 (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)

Show details on NVD website

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{
  "containers": {
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      "affected": [
        {
          "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": [
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "ad55004a3cb5b41ef78aa6c09e7bc5a489ba652b",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
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              "status": "affected",
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        },
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "3.16"
            },
            {
              "lessThan": "3.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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            },
            {
              "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "3.16",
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                },
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      "descriptions": [
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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 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()]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-23T13:58:27.579Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
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      ],
      "title": "can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing data",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68342",
    "datePublished": "2025-12-23T13:58:27.579Z",
    "dateReserved": "2025-12-16T14:48:05.298Z",
    "dateUpdated": "2025-12-23T13:58:27.579Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-2F36-X8XR-4642

CVE-2025-68342 (GCVE-0-2025-68342)

Tags

Sightings

Nomenclature