CVE-2026-23031 (GCVE-0-2026-23031)

Vulnerability from cvelistv5 – Published: 2026-01-31 11:42 – Updated: 2026-01-31 11:42
VLAI?
Title
can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak
Summary
In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak In gs_can_open(), the URBs for USB-in transfers are allocated, added to the parent->rx_submitted anchor and submitted. In the complete callback gs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In gs_can_close() the URBs are freed by calling usb_kill_anchored_urbs(parent->rx_submitted). However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in gs_can_close(). Fix the memory leak by anchoring the URB in the gs_usb_receive_bulk_callback() to the parent->rx_submitted anchor.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < f905bcfa971edb89e398c98957838d8c6381c0c7 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 08624b7206ddb9148eeffc2384ebda2c47b6d1e9 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 9f669a38ca70839229b7ba0f851820850a2fe1f7 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 7352e1d5932a0e777e39fa4b619801191f57e603 (git)
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    Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 6.6.122 , ≤ 6.6.* (semver)
Unaffected: 6.12.67 , ≤ 6.12.* (semver)
Unaffected: 6.18.7 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc6 , ≤ * (original_commit_for_fix)
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{
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          "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(): fix URB memory leak\n\nIn gs_can_open(), the URBs for USB-in transfers are allocated, added to the\nparent-\u003erx_submitted anchor and submitted. In the complete callback\ngs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In\ngs_can_close() the URBs are freed by calling\nusb_kill_anchored_urbs(parent-\u003erx_submitted).\n\nHowever, this does not take into account that the USB framework unanchors\nthe URB before the complete function is called. This means that once an\nin-URB has been completed, it is no longer anchored and is ultimately not\nreleased in gs_can_close().\n\nFix the memory leak by anchoring the URB in the\ngs_usb_receive_bulk_callback() to the parent-\u003erx_submitted anchor."
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      "providerMetadata": {
        "dateUpdated": "2026-01-31T11:42:09.276Z",
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        "shortName": "Linux"
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      ],
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    "cveId": "CVE-2026-23031",
    "datePublished": "2026-01-31T11:42:09.276Z",
    "dateReserved": "2026-01-13T15:37:45.942Z",
    "dateUpdated": "2026-01-31T11:42:09.276Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23031\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-01-31T12:16:06.413\",\"lastModified\":\"2026-01-31T12:16:06.413\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak\\n\\nIn gs_can_open(), the URBs for USB-in transfers are allocated, added to the\\nparent-\u003erx_submitted anchor and submitted. In the complete callback\\ngs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In\\ngs_can_close() the URBs are freed by calling\\nusb_kill_anchored_urbs(parent-\u003erx_submitted).\\n\\nHowever, this does not take into account that the USB framework unanchors\\nthe URB before the complete function is called. This means that once an\\nin-URB has been completed, it is no longer anchored and is ultimately not\\nreleased in gs_can_close().\\n\\nFix the memory leak by anchoring the URB in the\\ngs_usb_receive_bulk_callback() to the parent-\u003erx_submitted anchor.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/08624b7206ddb9148eeffc2384ebda2c47b6d1e9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7352e1d5932a0e777e39fa4b619801191f57e603\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9f669a38ca70839229b7ba0f851820850a2fe1f7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f905bcfa971edb89e398c98957838d8c6381c0c7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • 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.
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  • 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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