CVE-2026-97482

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

Published Sep 24, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< d7b33afbf9b54b61cb423af9663df54eae11d3b1
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< ea2901a4a90afc662e4d023542d91f10ab10fd3c
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 999ff3bf665f2abfb6af519ef3d6d42b061d3c15
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< a018d4195114ca2cf79858cc45c98581dee4795b
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 10d7fc3008d5b7ec03af8e08927f1d090014c2af
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 28d78783a871cdb7a637dcb72452ff7d303430ae
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02

Linux

affected

Version	Status	Constraints
`2.6.12`	affected	—
`0`	unaffected	< 2.6.12
`5.10.271`	unaffected	≤ 5.10.*
`5.15.222`	unaffected	≤ 5.15.*
`6.1.189`	unaffected	≤ 6.1.*
`6.6.158`	unaffected	≤ 6.6.*
`6.12.111`	unaffected	≤ 6.12.*
`6.18.53`	unaffected	≤ 6.18.*
`7.2`	unaffected	≤ *

No data.

Vendor Product Versions

Linux

Linux Kernel

Version	Status	Scheme	Platform
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,10d7fc3008d5b7ec03af8e08927f1d090014c2af)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,28d78783a871cdb7a637dcb72452ff7d303430ae)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02)`	affected	code_commit	—
`[0,6.12.111)`	affected	semver	—
`[0,6.18.53)`	affected	semver	—

Linux

Linux Kernel

Version	Status	Scheme	Platform
`[6.12.111,6.13.0)`	unaffected	semver	—
`[6.18.53,6.19.0)`	unaffected	semver	—
`[7.2,*]`	unaffected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Debian DLA	DLA-4817-1	linux-6.12 security update
Debian DLA	DLA-4841-1	linux security update
Debian DSA	DSA-6528-1	linux security update
Ubuntu USN	USN-8961-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9019-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9020-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9022-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9023-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9024-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9025-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9026-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9029-1	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-9039-1	Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN	USN-9040-1	Linux kernel (Low Latency NVIDIA) vulnerabilities
Ubuntu USN	USN-9066-1	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-9091-1	Linux kernel (NVIDIA Tegra) vulnerabilities

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.173% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97482.mbox
https://git.kernel.org/stable/c/10d7fc3008d5b7ec03af8e08927f1d090014c2af
https://git.kernel.org/stable/c/28d78783a871cdb7a637dcb72452ff7d303430ae
https://git.kernel.org/stable/c/5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02
https://git.kernel.org/stable/c/999ff3bf665f2abfb6af519ef3d6d42b061d3c15
https://git.kernel.org/stable/c/a018d4195114ca2cf79858cc45c98581dee4795b
https://git.kernel.org/stable/c/d7b33afbf9b54b61cb423af9663df54eae11d3b1
https://git.kernel.org/stable/c/ea2901a4a90afc662e4d023542d91f10ab10fd3c
https://nvd.nist.gov/vuln/detail/CVE-2026-97482
https://www.cve.org/CVERecord?id=CVE-2026-97482

History

Oct 3, 2026 11:15 AM Added references View changes

Type	Values Removed	Values Added
References		https://git.kernel.org/stable/c/999ff3bf665f2abfb6af519ef3d6d42b061d3c15 https://git.kernel.org/stable/c/a018d4195114ca2cf79858cc45c98581dee4795b https://git.kernel.org/stable/c/d7b33afbf9b54b61cb423af9663df54eae11d3b1 https://git.kernel.org/stable/c/ea2901a4a90afc662e4d023542d91f10ab10fd3c

Sep 30, 2026 12:15 AM Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
References		https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97482.mbox https://nvd.nist.gov/vuln/detail/CVE-2026-97482 https://www.cve.org/CVERecord?id=CVE-2026-97482
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Sep 25, 2026 3:00 AM Weaknesses updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-476

Sep 24, 2026 4:30 PM Description updated. Title updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references View changes

Type	Values Removed	Values Added
Description		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.
Title		usb: gadget: goku_udc: avoid NULL deref of dev->driver in INT_USBRESET log
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/10d7fc3008d5b7ec03af8e08927f1d090014c2af https://git.kernel.org/stable/c/28d78783a871cdb7a637dcb72452ff7d303430ae https://git.kernel.org/stable/c/5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02