CVE-2026-97482

Published: Set 24, 2026 Last Modified: Set 24, 2026
ExploitDB:
Other exploit source:
Google Dorks:

Description

AI Translation Available

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.

https://git.kernel.org/stable/c/10d7fc3008d5b7ec03af8e08927f1d090014c2af
https://git.kernel.org/stable/c/28d78783a871cdb7a637dcb72452ff7d303430ae
https://git.kernel.org/stable/c/5bf5e3fba9bc7dfd69701521dbe9809f8ccbdb02