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
References
Impacted products
Vendor Product Version
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)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
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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."
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        "shortName": "Linux"
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    "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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  }
}


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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.
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  • 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.



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