CVE-2026-89737
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.
How to fix
- Linux Linuxebb840d982a612261cfc8a7687735a140c6c7024, 0a25484fe22f621e151367a59a82330a22ac80bc, 92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 100e257386595b3f1865ca8a991e2ba74f9701ff ≤ v < ebb840d982a612261cfc8a7687735a140c6c7024, 100e257386595b3f1865ca8a991e2ba74f9701ff ≤ v < 0a25484fe22f621e151367a59a82330a22ac80bc, 100e257386595b3f1865ca8a991e2ba74f9701ff ≤ v < 92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3, 6.14 | ebb840d982a612261cfc8a7687735a140c6c7024, 0a25484fe22f621e151367a59a82330a22ac80bc, 92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3 |
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