# CVE-2026-89737

## Summary

- **CVE ID:** CVE-2026-89737
- **Severity:** UNKNOWN
- **CVSS Score:** 1.51
- **CWE:** N/A
- **Published:** Sep 11, 2026
- **Last Modified:** Sep 16, 2026

## Description

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

usb: typec: thunderbolt: Disable work before freeing tbt on remove

tbt_altmode_remove() drops the plug and cable references without
draining tbt->work. The work function dereferences those references,
and can also requeue itself in its error path. The VDM callbacks can
queue the same work item.

Disable and drain tbt->work before dropping the references. This waits
for an existing invocation and prevents subsequent schedule_work()
calls from queueing it during teardown.

This issue was found by an in-house static analysis tool and confirmed
by manual code review.

## Affected Products

- Linux — Linux (100e257386595b3f1865ca8a991e2ba74f9701ff)
- Linux — Linux (6.14)
- Linux — Linux (0)
- Linux — Linux (6.18.50)
- Linux — Linux (7.2.4)
- Linux — Linux (7.3-rc1)

## References

- [CNA](https://git.kernel.org/stable/c/ebb840d982a612261cfc8a7687735a140c6c7024)
- [CNA](https://git.kernel.org/stable/c/0a25484fe22f621e151367a59a82330a22ac80bc)
- [CNA](https://git.kernel.org/stable/c/92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.17%
- **EPSS Percentile:** 6.2

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