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GHSA-HC2C-96RF-CQVJ

Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-24 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: goku_udc: avoid NULL deref of dev->driver in INT_USBRESET log

goku_irq() handles a number of bus events under a single ep0 path. It already guards the gadget driver suspend/resume callbacks against a NULL ->driver:

if (dev->gadget.speed != USB_SPEED_UNKNOWN
        && dev->driver
        && dev->driver->resume) {
    spin_unlock(&dev->lock);
    dev->driver->resume(&dev->gadget);
    ...
}

but the very next branch unconditionally dereferences dev->driver when an INT_USBRESET arrives:

if (stat & INT_USBRESET) {
    ACK(INT_USBRESET);
    INFO(dev, "USB reset done, gadget %s\n",
        dev->driver->driver.name);
}

If the controller raises INT_USBRESET before any gadget driver has been bound (or after one has been unbound), dev->driver is NULL and the printk dereferences NULL.

smatch flags the inconsistency:

drivers/usb/gadget/udc/goku_udc.c:1618 goku_irq() error: we previously assumed 'dev->driver' could be null (see line 1607)

Fall back to a placeholder when the gadget driver is not bound.

No functional change while a gadget driver is bound.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97482"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-24T17:17:25Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: goku_udc: avoid NULL deref of dev-\u003edriver in INT_USBRESET log\n\ngoku_irq() handles a number of bus events under a single ep0 path.\nIt already guards the gadget driver suspend/resume callbacks against a\nNULL -\u003edriver:\n\n\tif (dev-\u003egadget.speed != USB_SPEED_UNKNOWN\n\t\t\t\u0026\u0026 dev-\u003edriver\n\t\t\t\u0026\u0026 dev-\u003edriver-\u003eresume) {\n\t\tspin_unlock(\u0026dev-\u003elock);\n\t\tdev-\u003edriver-\u003eresume(\u0026dev-\u003egadget);\n\t\t...\n\t}\n\nbut the very next branch unconditionally dereferences dev-\u003edriver\nwhen an INT_USBRESET arrives:\n\n\tif (stat \u0026 INT_USBRESET) {\n\t\tACK(INT_USBRESET);\n\t\tINFO(dev, \"USB reset done, gadget %s\\n\",\n\t\t\tdev-\u003edriver-\u003edriver.name);\n\t}\n\nIf the controller raises INT_USBRESET before any gadget driver has\nbeen bound (or after one has been unbound), dev-\u003edriver is NULL and\nthe printk dereferences NULL.\n\nsmatch flags the inconsistency:\n\n  drivers/usb/gadget/udc/goku_udc.c:1618 goku_irq() error:\n  we previously assumed \u0027dev-\u003edriver\u0027 could be null (see line 1607)\n\nFall back to a placeholder when the gadget driver is not bound.\n\nNo functional change while a gadget driver is bound.",
  "id": "GHSA-hc2c-96rf-cqvj",
  "modified": "2026-09-24T18:31:34Z",
  "published": "2026-09-24T18:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97482"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10d7fc3008d5b7ec03af8e08927f1d090014c2af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28d78783a871cdb7a637dcb72452ff7d303430ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97482 (GCVE-0-2026-97482)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:04 – Updated: 2026-09-24 16:04

Title

usb: gadget: goku_udc: avoid NULL deref of dev->driver in INT_USBRESET log

Summary

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: goku_udc: avoid NULL deref of dev->driver in INT_USBRESET log goku_irq() handles a number of bus events under a single ep0 path. It already guards the gadget driver suspend/resume callbacks against a NULL ->driver: if (dev->gadget.speed != USB_SPEED_UNKNOWN && dev->driver && dev->driver->resume) { spin_unlock(&dev->lock); dev->driver->resume(&dev->gadget); ... } but the very next branch unconditionally dereferences dev->driver when an INT_USBRESET arrives: if (stat & INT_USBRESET) { ACK(INT_USBRESET); INFO(dev, "USB reset done, gadget %s\n", dev->driver->driver.name); } If the controller raises INT_USBRESET before any gadget driver has been bound (or after one has been unbound), dev->driver is NULL and the printk dereferences NULL. smatch flags the inconsistency: drivers/usb/gadget/udc/goku_udc.c:1618 goku_irq() error: we previously assumed 'dev->driver' could be null (see line 1607) Fall back to a placeholder when the gadget driver is not bound. No functional change while a gadget driver is bound.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/10d7fc3008d5b7ec0…
https://git.kernel.org/stable/c/28d78783a871cdb7a…
https://git.kernel.org/stable/c/5bf5e3fba9bc7dfd6…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 10d7fc3008d5b7ec03af8e08927f1d090014c2af (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 28d78783a871cdb7a637dcb72452ff7d303430ae (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02 (git) Affected: 0 , < 6.12.111 (semver) Affected: 0 , < 6.18.53 (semver)
Linux	Linux	Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/udc/goku_udc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "10d7fc3008d5b7ec03af8e08927f1d090014c2af",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "28d78783a871cdb7a637dcb72452ff7d303430ae",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6.12.111",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.53",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/udc/goku_udc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: goku_udc: avoid NULL deref of dev-\u003edriver in INT_USBRESET log\n\ngoku_irq() handles a number of bus events under a single ep0 path.\nIt already guards the gadget driver suspend/resume callbacks against a\nNULL -\u003edriver:\n\n\tif (dev-\u003egadget.speed != USB_SPEED_UNKNOWN\n\t\t\t\u0026\u0026 dev-\u003edriver\n\t\t\t\u0026\u0026 dev-\u003edriver-\u003eresume) {\n\t\tspin_unlock(\u0026dev-\u003elock);\n\t\tdev-\u003edriver-\u003eresume(\u0026dev-\u003egadget);\n\t\t...\n\t}\n\nbut the very next branch unconditionally dereferences dev-\u003edriver\nwhen an INT_USBRESET arrives:\n\n\tif (stat \u0026 INT_USBRESET) {\n\t\tACK(INT_USBRESET);\n\t\tINFO(dev, \"USB reset done, gadget %s\\n\",\n\t\t\tdev-\u003edriver-\u003edriver.name);\n\t}\n\nIf the controller raises INT_USBRESET before any gadget driver has\nbeen bound (or after one has been unbound), dev-\u003edriver is NULL and\nthe printk dereferences NULL.\n\nsmatch flags the inconsistency:\n\n  drivers/usb/gadget/udc/goku_udc.c:1618 goku_irq() error:\n  we previously assumed \u0027dev-\u003edriver\u0027 could be null (see line 1607)\n\nFall back to a placeholder when the gadget driver is not bound.\n\nNo functional change while a gadget driver is bound."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-24T16:04:25.874Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/10d7fc3008d5b7ec03af8e08927f1d090014c2af"
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          "url": "https://git.kernel.org/stable/c/28d78783a871cdb7a637dcb72452ff7d303430ae"
        },
        {
          "url": "https://git.kernel.org/stable/c/5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02"
        }
      ],
      "title": "usb: gadget: goku_udc: avoid NULL deref of dev-\u003edriver in INT_USBRESET log",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97482",
    "datePublished": "2026-09-24T16:04:25.874Z",
    "dateReserved": "2026-09-24T16:01:01.149Z",
    "dateUpdated": "2026-09-24T16:04:25.874Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-HC2C-96RF-CQVJ

CVE-2026-97482 (GCVE-0-2026-97482)

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