Vulnerability-Lookup

GHSA-GVM4-5V6X-VMV9

Vulnerability from github – Published: 2026-01-31 12:30 – Updated: 2026-01-31 12:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23031"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-31T12:16:06Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-gvm4-5v6x-vmv9",
  "modified": "2026-01-31T12:30:12Z",
  "published": "2026-01-31T12:30:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23031"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08624b7206ddb9148eeffc2384ebda2c47b6d1e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7352e1d5932a0e777e39fa4b619801191f57e603"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f669a38ca70839229b7ba0f851820850a2fe1f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f905bcfa971edb89e398c98957838d8c6381c0c7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-01-31 11:42 – Updated: 2026-01-31 11:42

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

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/f905bcfa971edb89e…
	https://git.kernel.org/stable/c/08624b7206ddb9148…
	https://git.kernel.org/stable/c/9f669a38ca7083922…
	https://git.kernel.org/stable/c/7352e1d5932a0e777…

Impacted products

Vendor

Product

Version

Linux

Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < f905bcfa971edb89e398c98957838d8c6381c0c7 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 08624b7206ddb9148eeffc2384ebda2c47b6d1e9 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 9f669a38ca70839229b7ba0f851820850a2fe1f7 (git)
Affected: d08e973a77d128b25e01a08c34d89593fdf222da , < 7352e1d5932a0e777e39fa4b619801191f57e603 (git)

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)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/gs_usb.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f905bcfa971edb89e398c98957838d8c6381c0c7",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "08624b7206ddb9148eeffc2384ebda2c47b6d1e9",
              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
              "versionType": "git"
            },
            {
              "lessThan": "7352e1d5932a0e777e39fa4b619801191f57e603",
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              "version": "d08e973a77d128b25e01a08c34d89593fdf222da",
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            }
          ]
        },
        {
          "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": "6.6.*",
              "status": "unaffected",
              "version": "6.6.122",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.122",
                  "versionStartIncluding": "3.16",
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                },
                {
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                },
                {
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                },
                {
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-31T11:42:09.276Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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        {
          "url": "https://git.kernel.org/stable/c/7352e1d5932a0e777e39fa4b619801191f57e603"
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      ],
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "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"
  },
  "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-GVM4-5V6X-VMV9

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

Tags

Sightings

Nomenclature