# CVE-2025-68781

## Summary

- **CVE ID:** CVE-2025-68781
- **Severity:** UNKNOWN
- **CVSS Score:** 1.01
- **CWE:** N/A
- **Published:** Jan 13, 2026
- **Last Modified:** Sep 17, 2026

## Description

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

usb: phy: fsl-usb: Fix use-after-free in delayed work during device removal

The delayed work item otg_event is initialized in fsl_otg_conf() and
scheduled under two conditions:
1. When a host controller binds to the OTG controller.
2. When the USB ID pin state changes (cable insertion/removal).

A race condition occurs when the device is removed via fsl_otg_remove():
the fsl_otg instance may be freed while the delayed work is still pending
or executing. This leads to use-after-free when the work function
fsl_otg_event() accesses the already freed memory.

The problematic scenario:

(detach thread)            | (delayed work)
fsl_otg_remove()           |
  kfree(fsl_otg_dev) //FREE| fsl_otg_event()
                           |   og = container_of(...) //USE
                           |   og-> //USE

Fix this by calling disable_delayed_work_sync() in fsl_otg_remove()
before deallocating the fsl_otg structure. This ensures the delayed work
is properly canceled and completes execution prior to memory deallocation.

This bug was identified through static analysis.

## Affected Products

- Linux — Linux (0807c500a1a6d7fa20cbd7bbe7fea14a66112463)
- Linux — Linux (3.0)
- Linux — Linux (0)
- Linux — Linux (6.1.160)
- Linux — Linux (6.6.120)
- Linux — Linux (6.12.64)
- Linux — Linux (6.18.3)
- Linux — Linux (6.19)

## References

- [CNA](https://git.kernel.org/stable/c/4476c73bbbb09b13a962176fca934b32d3954a2e)
- [CNA](https://git.kernel.org/stable/c/319f7a85b3c4e34ac2fe083eb146fe129a556317)
- [CNA](https://git.kernel.org/stable/c/69f9a0701abc3d1f8225074c56c27e6c16a37222)
- [CNA](https://git.kernel.org/stable/c/2e7c47e2eb3cfeadf78a1ccbac8492c60d508f23)
- [CNA](https://git.kernel.org/stable/c/41ca62e3e21e48c2903b3b45e232cf4f2ff7434f)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 11.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._