---
id: CVE-2026-97482
title: |-
  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 gad…
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 gad…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    d7b33afbf9b54b61cb423af9663df54eae11d3b1
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    ea2901a4a90afc662e4d023542d91f10ab10fd3c
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    999ff3bf665f2abfb6af519ef3d6d42b061d3c15
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    a018d4195114ca2cf79858cc45c98581dee4795b
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    10d7fc3008d5b7ec03af8e08927f1d090014c2af
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    28d78783a871cdb7a637dcb72452ff7d303430ae
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02
  - Linux 2.6.12
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:58.110'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97482'
references:
  - url: 'https://git.kernel.org/stable/c/10d7fc3008d5b7ec03af8e08927f1d090014c2af'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/28d78783a871cdb7a637dcb72452ff7d303430ae'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/999ff3bf665f2abfb6af519ef3d6d42b061d3c15'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a018d4195114ca2cf79858cc45c98581dee4795b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d7b33afbf9b54b61cb423af9663df54eae11d3b1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ea2901a4a90afc662e4d023542d91f10ab10fd3c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97482.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97482'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540399'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97482'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97482'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97482.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00173
epssPercentile: 0.06645
cvssSource: vendor
ingestedAt: '2026-09-24T16:47:15.869Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-29 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97482.json)